bed check vs verification

bed check and verification both are nouns.

Word	Noun	Adjective	Verb	Adverb
bed check	Yes	No	No	No
verification	Yes	No	No	No

As nouns, verification is a hypernym of bed check; that is, verification is a word with a broader meaning than bed check:

bed check: a check that everyone is in bed by the time they should be
verification: additional proof that something that was believed (some fact or hypothesis or theory) is correct

Other hypernyms of bed check include check, confirmation, substantiation.

bed check (noun)	verification (noun)
a check that everyone is in bed by the time they should be	additional proof that something that was believed (some fact or hypothesis or theory) is correct
	(law) an affidavit attached to a statement confirming the truth of that statement