prevalent vs prevailing

prevalent and prevailing both are adjectives.

Word	Noun	Adjective	Verb	Adverb
prevalent	No	Yes	No	No
prevailing	No	Yes	No	No

As adjectives, prevalent and prevailing are synonyms defined as:

Other synonyms of prevalent include dominant, predominant, rife.

prevalent (adjective)	prevailing (adjective)
most frequent or common	most frequent or common