comment vs pick apart

comment is a noun but pick apart is not a noun.

Word	Noun	Adjective	Verb	Adverb
comment	Yes	No	Yes	No
pick apart	No	No	Yes	No

As verbs, pick apart is a hyponym of comment; that is, pick apart is a word with a more specific, narrower meaning than comment:

comment: make or write a comment on
pick apart: find fault with; express criticism of; point out real or perceived flaws

Other hyponyms of comment include criticise, criticize, knock, wisecrack, kibbitz, kibitz.

comment (noun)	pick apart (noun)
a statement that expresses a personal opinion or belief or adds information
a written explanation or criticism or illustration that is added to a book or other textual material
a report (often malicious) about the behavior of other people

comment (verb)	pick apart (verb)
make or write a comment on	find fault with; express criticism of; point out real or perceived flaws
provide interlinear explanations for words or phrases
explain or interpret something