dominant vs preponderant

dominant is a noun but preponderant is not a noun.

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

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

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