Each category of the four Astrology sign (such as movable, fixed and common) has a common factor or quality of expression, but this quality in each astrology sign would be applied differently. The three qualities may be compared to the three Guns of Hindus, viz the cardinal or movable to Rajas (activity), this fixed to Tamas (constancy), and the mutable or common to Sattva (rhythm)

Mesha, Karaka, Tula and Makar are movable astrology signs, Rishaba , Simha ,Vrischika and fixed ones. Mithuna, Kanya, Dhanu and Meena are known as common astrology sign.

Common Astrology signs may be like the swinging pendulum. This sign represent vibratory motion passing from one point to another and back again linking the two extremes of its motion. This nature is dual and fluctuating. Flexibility or plasticity is the predominant characteristic of common astrology sign.

These sign denote an intellectual, sympathetic, sensitive subtle, versatile and changeful nature. The native born in these astrology sign or having a majority of the planets in these sign will often be inconstant, indecisive, vacillating and restless. Being flexible, they never exert their will power sufficiently. Their tendency is to drift and dream of the future. Native of common astrology sign are peaceful and sympathetic in their disposition and cordial and pleasing in their manner. They sometimes suffer injury from others not because they cannot retaliate, but deign averse by nature to exertion they do not wish to take up the trouble to fight. Nothing appeals to the man of common astrology sign permanently. He desires nothing as much as change and roving about, usually in an aimless manner. One born in common sign is best fitted to be in the employ of others than have others in his employ. Unless born will off, these people seldom make their way in life, always lacking leisure and lacking a go-a head spirit.

People with common astrology sign are sensitive to and much swayed by the surrounding environment as they lack the stamina to assert them selves. They are not capable of the slow and sustained work put form by fixed class.. They prove best when they take up agencies, commission jobs, etc, in which much of executive skill is not required.

Common astrology sing bring income to one through service and ordinary means. Finance is prone to fluctuation. The man of common sign, being lazy and indifferent, will be indifferent even in regard to accumulation of wealth.

Common astrology sign incline to affections of the lungs, limbs, breathing apparatus and all kinds of nervous disorders. The diseases denoted are often convertible. One may be able to overcome them entirely or the diseases will run their course and become chronic depending on the individual’s mental temperament. Common signs on the 3rd house cusp make the mind more receptive, methodical, systematic and easily affected by surroundings.

When common astrology sign are connected with houses2, 6and 10, one is best fitted to serve others. For instance, one can act as a middleman, an agent, a messenger, clerk, teacher, editor or speaker. According to Alan Leo, it sometimes denotes occupations in which uniforms are worn, companies or where public commodities are dealt with. If the 1st and 7th lords are in harmonious aspect or in parivartana (mutual exchange), partnership is advisable; a good mutual working arrangement is indicated. if the cusp of the 11th house and the lord of 11 is in common signs one will acquire doubtful friendships.

When the common sign are on cusps of the cups of the angles (1st 4th and 10th houses in the chart) or when a number of planets are posited in these signs, the mind is often fickle, fighty superficial, wavering and versatile. One may grasp an idea in a, short time and arrive at a decision, but will change his dcision, quickly. Native with common sign will be systematic and methodical; but succeeds in life by other's aid. Even if one succeeds, he does not gain the required recognition for his merit and labor. Being vacillating, he is liable miss opportunities that come his way.

           

While studying the Indian Astrology, I would come to know that the influence of the fixed astrology sign rouses the desire nature, giving stamina and persistence in action,. Person possessing these fixed astrology sign have a very strong and determined will. They will thorough. If they made up their mind to do anything, they are pre-eminently thorough. If they make up their mind to do anything, they will keep on working with remarkable and persistence until success comes to them. Native with fixed astrology sign are practical in their approach. They will not mind doing anything for one who has own their affection. They are very firm in their mental attitude and once an opinion has been formed they cling to it with tenacity. They are very difficult people to convince but, when over to a cause, they will defend in to the last.
           
People influenced by the fixed astrology sign will be outspoken, self reliant and reliable and remarkably patient. On the other side they are obstinate, rigid, dogmatic , unrelenting and unbending . The natives with the fixed astrology sign are very fond 0f comfort, luxury and other refining influences of life.
           
Fixed astrology sign native tend to ailments affecting heart and the generative system. Chronic or organic troubles are threatened. One may suffer from diseases like diphtheria, bronchitis, asthma, heart troubles, defective circulation system and spinal complaints. Afflictions from fixed astrology sign denote that one may inherit , hereditary diseases which usually become chronic.
           
Indian astrology proves that people with fixed astrology sign bring the native gain through authoritative influence, investments and accumulation of unearned income. There being no fluctuation denoted, one can expect to have a fixed income.
           
If the third house horoscope falls in a fixed astrology sign, then the native will have a fixed and rigid attitude. He will be persevering, plodding, painstaking, proud and authoritative. He dislikes travelling. Any travel is usually forced by circumstances.
           
In Indian astrology these native favour Government service and end employment in ancient institutions and established businesses with security of service. One will achieve success through slow, steady and sustained effort.
           
The fixed astrology sign people grasp opportunities slowly. being conservative-minded,  they do not  quickly respond to the new environment and care more for permanency and fixity.

when fixed astrology sign are on the cusps of the 1st 3th 7th and 10th houses in a horoscopes or most of the planets are found in fixed signs, one be firm, determined, dignified and self-reliant. He will be slow and plodding but will succeed eventually. One will require time come to a decision "Patient persistence in life through fixity of purpose and persistent  effort. He will put his talent  to the best use. Setback does not daunt him. He will adhere to a method only after being satisfied that it will meet his requirements. it is next to impossible to change him but when veered round to a cause, he will prove to be its most ardent and reliable advocate.