remark vs kibbitz

remark is a noun but kibbitz is not a noun.

Word	Noun	Adjective	Verb	Adverb
remark	Yes	No	Yes	No
kibbitz	No	No	Yes	No

As verbs, kibbitz is a hyponym of remark; that is, kibbitz is a word with a more specific, narrower meaning than remark:

Other hyponyms of remark include criticise, criticize, knock, pick apart, wisecrack, kibitz.

remark (noun)	kibbitz (noun)
explicit notice
a statement that expresses a personal opinion or belief or adds information

remark (verb)	kibbitz (verb)
make mention of	make unwanted and intrusive comments
make or write a comment on