caption vs pic

caption and pic both are nouns.

Word	Noun	Adjective	Verb	Adverb
caption	Yes	No	Yes	No
pic	Yes	No	No	No

caption (noun)	pic (noun)
brief description accompanying an illustration	a representation of a person or scene in the form of a print or transparent slide or in digital format
translation of foreign dialogue of a movie or TV program; usually displayed at the bottom of the screen	a form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement
taking exception; especially a quibble based on a captious argument

caption (verb)	pic (verb)
provide with a caption, as of a photograph or a drawing