coniferous vs conifer

coniferous is not a noun while conifer is a noun.

Word	Noun	Adjective	Verb	Adverb
coniferous	No	Yes	No	No
conifer	Yes	No	No	No

coniferous (noun)	conifer (noun)
	any gymnospermous tree or shrub bearing cones

coniferous (adjective)	conifer (adjective)
of or relating to or part of trees or shrubs bearing cones and evergreen leaves