comment vs disc-jockey

comment is a noun but disc-jockey is not a noun.

Word	Noun	Adjective	Verb	Adverb
comment	Yes	No	Yes	No
disc-jockey	No	No	Yes	No

As verbs, disc-jockey is a hyponym of comment; that is, disc-jockey is a word with a more specific, narrower meaning than comment:

Other hyponyms of comment include second-guess, disk-jockey, DJ.

comment (noun)	disc-jockey (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)	disc-jockey (verb)
make or write a comment on	comment on music to be played
provide interlinear explanations for words or phrases
explain or interpret something