preponderant vs predominant

preponderant and predominant both are adjectives.

Word	Noun	Adjective	Verb	Adverb
preponderant	No	Yes	No	No
predominant	No	Yes	No	No

As adjectives, preponderant and predominant are synonyms defined as:

Other synonyms of preponderant include overriding, paramount, predominate, preponderating.

preponderant (adjective)	predominant (adjective)
having superior power and influence	having superior power and influence
	most frequent or common