effervesce vs fizz

effervesce is not a noun while fizz is a noun.

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

As verbs, effervesce and fizz are synonyms defined as:

Other synonyms of effervesce include foam, form bubbles, froth, sparkle.

effervesce (noun)	fizz (noun)
	an effervescent beverage (usually alcoholic)

effervesce (verb)	fizz (verb)
become bubbly or frothy or foaming	become bubbly or frothy or foaming