copy, imitate, mimic, ape, mock mean to make something so that it resembles an existing thing. copy suggests duplicating an original as nearly as possible.
imitate suggests following a model or a pattern but may allow for some variation.
mimic implies a close copying (as of voice or mannerism) often for fun, ridicule, or lifelike imitation.
ape may suggest presumptuous, slavish, or inept imitating of a superior original.
mock usually implies imitation with derision.