preferent vs preference

preferent is not a noun while preference is a noun.

Word	Noun	Adjective	Verb	Adverb
preferent	No	Yes	No	No
preference	Yes	No	No	No

preferent (noun)	preference (noun)
	grant of favor or advantage to one over another (especially to a country or countries in matters of international trade, such as levying duties)
	the right or chance to choose
	a predisposition in favor of something
	a strong liking

preferent (adjective)	preference (adjective)
preferred above all others and treated with partiality