platitude vs remark

platitude and remark both are nouns.

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

As nouns, remark is a hypernym of platitude; that is, remark is a word with a broader meaning than platitude:

platitude: a trite or obvious remark
remark: a statement that expresses a personal opinion or belief or adds information

Other hypernyms of platitude include comment, input, truism.

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

platitude (verb)	remark (verb)
	make mention of
	make or write a comment on