What's the difference between 雕像 and 雕塑?
The 像 character indicates that the sculpture is supposed to resemble a person, it's an "alike" or depiction of someone, 雕塑 may take more vague shapes, abstract sculptures, especially larger ones, etc., including persons of course. 

Try using Google image search.

First term: 雕像
Second term: 雕塑