foam vs spume

foam and spume both are nouns.

Word	Noun	Adjective	Verb	Adverb
foam	Yes	No	Yes	No
spume	Yes	No	Yes	No

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

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

foam (noun)	spume (noun)
a mass of small bubbles formed in or on a liquid	foam or froth on the sea
a lightweight material in cellular form; made by introducing gas bubbles during manufacture

foam (verb)	spume (verb)
become bubbly or frothy or foaming	make froth or foam and become bubbly