preponderant vs dominant

preponderant is not a noun while dominant is a noun.

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

preponderant (noun)	dominant (noun)
	an allele that produces the same phenotype whether its paired allele is identical or different
	(music) the fifth note of the diatonic scale

preponderant (adjective)	dominant (adjective)
having superior power and influence	exercising influence or control
	(of genes) producing the same phenotype whether its allele is identical or dissimilar
	most frequent or common