arborvitae vs conifer

arborvitae and conifer both are nouns.

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

As nouns, conifer is a hypernym of arborvitae; that is, conifer is a word with a broader meaning than arborvitae:

arborvitae: any of several Asian and North American conifers of the genera Thuja and Thujopsis
conifer: any gymnospermous tree or shrub bearing cones

Other hypernyms of arborvitae include coniferous tree.

arborvitae (noun)	conifer (noun)
any of several Asian and North American conifers of the genera Thuja and Thujopsis	any gymnospermous tree or shrub bearing cones