effervesce vs lather

effervesce is not a noun while lather is a noun.

Word	Noun	Adjective	Verb	Adverb
effervesce	No	No	Yes	No
lather	Yes	No	Yes	No

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

Other hyponyms of effervesce include seethe.

effervesce (noun)	lather (noun)
	the froth produced by soaps or detergents
	the foam resulting from excessive sweating (as on a horse)
	a workman who puts up laths
	agitation resulting from active worry

effervesce (verb)	lather (verb)
become bubbly or frothy or foaming	rub soap all over, usually with the purpose of cleaning
	exude sweat or lather
	form a lather
	beat severely with a whip or rod