effervescent vs frothy

effervescent and frothy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
effervescent	No	Yes	No	No
frothy	No	Yes	No	No

As adjectives, effervescent and frothy are synonyms defined as:

Other synonyms of effervescent include bubbling, scintillating, sparkly.

effervescent (adjective)	frothy (adjective)
(of a liquid) giving off bubbles	emitting or filled with bubbles as from carbonation or fermentation
used of wines and waters; charged naturally or artificially with carbon dioxide	marked by high spirits or excitement
marked by high spirits or excitement