run-through vs rehearsal

run-through and rehearsal both are nouns.

Word	Noun	Adjective	Verb	Adverb
run-through	Yes	No	No	No
rehearsal	Yes	No	No	No

As nouns, rehearsal is a hypernym of run-through; that is, rehearsal is a word with a broader meaning than run-through:

run-through: an uninterrupted rehearsal
rehearsal: a practice session in preparation for a public performance (as of a play or speech or concert)

Other hypernyms of run-through include dry run.

run-through (noun)	rehearsal (noun)
an uninterrupted rehearsal	(psychology) a form of practice; repetition of information (silently or aloud) in order to keep it in short-term memory
	a practice session in preparation for a public performance (as of a play or speech or concert)