minimal vs nominal

minimal is not a noun while nominal is a noun.

Word	Noun	Adjective	Verb	Adverb
minimal	No	Yes	No	No
nominal	Yes	Yes	No	No

minimal (noun)	nominal (noun)
	a phrase that can function as the subject or object of a verb

minimal (adjective)	nominal (adjective)
the least possible	of, relating to, or characteristic of an amount that is not adjusted for inflation
	pertaining to a noun or to a word group that functions as a noun
	relating to or constituting or bearing or giving a name
	existing in name only
	insignificantly small; a matter of form only (`tokenish' is informal)
	named; bearing the name of a specific person