talk of the town vs comment

talk of the town and comment both are nouns.

Word	Noun	Adjective	Verb	Adverb
talk of the town	Yes	No	No	No
comment	Yes	No	Yes	No

As nouns, comment is a hypernym of talk of the town; that is, comment is a word with a broader meaning than talk of the town:

Other hypernyms of talk of the town include gossip, scuttlebutt.

talk of the town (noun)	comment (noun)
idle gossip or rumor	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

talk of the town (verb)	comment (verb)
	make or write a comment on
	provide interlinear explanations for words or phrases
	explain or interpret something