Inhibitions are compulsions preventing a person to do anything, while Shyness is mere deliberate unwillingness to take initiative and may not be seen all the time.

The generalized common literary meaning of inhibition, as you know, is 'blocking or holding back of one physiological process by another.' In the same context, shyness is that mental attitude that impels one not to be assertive in the presence of others, to be cautiously distrustful or being timid and wary to be extremely self-conscious. In this generality what we find as the most significant difference between inhibition and shyness is that the former is essentially guided by a physiological process whereas the latter is a mental attitude, in spite of the fact that any mental attitude is also a resultant physiological process but with a distinctively recognizable identity.

It is possible for a person to be wary of another, for some reason or the other: It is therefore quite natural for the one who is wary of the other, to keep away from interacting or mingling or exchange formal greetings with the other. Here, a third party might rightly conclude that the person involved is shy, bu ...more

I find no difference between Sharad Pawer's inhibition for doing something good to poor man's food and Rahul Gandhi's shyness of becoming more bold, having so much power available.
Jai Hind.

Inhibitions is a type of lack of self confidence, whereas the shyness is the lack of saying or doing something

Think inhibition is where we are not sure if we need to display a certain act or thought out to others.And shyness could be one state of mind which controls our code of conduct to be a bit hesitant in the presence of others with one bit of adrenalin running.