sweep under the rug vs conceal

sweep under the rug and conceal both are verbs.

Word	Noun	Adjective	Verb	Adverb
sweep under the rug	No	No	Yes	No
conceal	No	No	Yes	No

As verbs, conceal is a hypernym of sweep under the rug; that is, conceal is a word with a broader meaning than sweep under the rug:

sweep under the rug: to conceal something in the hopes it won't be discovered by others
conceal: prevent from being seen or discovered

Other hypernyms of sweep under the rug include hide.

sweep under the rug (verb)	conceal (verb)
to conceal something in the hopes it won't be discovered by others	hold back; keep from being perceived by others
	prevent from being seen or discovered