what is difference in Look ,see ,watch and visit. please suggest with examples if possible.

Look - To 'look' at something for a reason, with an intention. Example:- 1) Look at that old man. 2) Look at these pictures. See -to 'see' something that comes into our sight that we weren’t looking for. Example:- 1) Did you see that movie? 2) Come, let us see the museum Watch - to 'watch' at something carefully, usually at something which is moving. Example:- 1) Watch him carefully 2) Are you watching the T.V?