rinse vs scour

rinse and scour both are nouns.

Word	Noun	Adjective	Verb	Adverb
rinse	Yes	No	Yes	No
scour	Yes	No	Yes	No

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

Other hyponyms of rinse include flush, purge.

rinse (noun)	scour (noun)
washing lightly without soap	a place that is scoured (especially by running water)
the act of giving a light tint to the hair
the removal of soap with clean water in the final stage of washing
a liquid preparation used on wet hair to give it a tint

rinse (verb)	scour (verb)
rinse one's mouth and throat with mouthwash	rinse, clean, or empty with a liquid
wash off soap or remaining dirt	rub hard or scrub
clean with some chemical process	clean with hard rubbing
	examine minutely