froth vs whitewater

froth and whitewater both are nouns.

Word	Noun	Adjective	Verb	Adverb
froth	Yes	No	Yes	No
whitewater	Yes	No	No	No

As nouns, whitewater is a hyponym of froth; that is, whitewater is a word with a more specific, narrower meaning than froth:

Other hyponyms of froth include shaving foam, head, lather, lather, soapsuds, suds, spume, white water.

froth (noun)	whitewater (noun)
a mass of small bubbles formed in or on a liquid	frothy water as in rapids or waterfalls

froth (verb)	whitewater (verb)
exude or expel foam
become bubbly or frothy or foaming
make froth or foam and become bubbly