See, look, watch can all mean to perceive something by means of the eyes.
See (see also SEE 1 ) stresses the reception of visual impressions <he is now able to see clearly> <have the power of seeing >
Look stresses the directing of the eyes to something or the fixing of the eyes on something in order to see it.
Watch (see also TEND ) implies a following of something with one’s eyes, so as to observe every movement, every change, a sign of danger, or a favorable opportunity.