cypress tree vs coniferous tree

cypress tree and coniferous tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
cypress tree	Yes	No	No	No
coniferous tree	Yes	No	No	No

As nouns, coniferous tree is a hypernym of cypress tree; that is, coniferous tree is a word with a broader meaning than cypress tree:

cypress tree: any of numerous evergreen conifers of the genus Cupressus of north temperate regions having dark scalelike leaves and rounded cones
coniferous tree: any gymnospermous tree or shrub bearing cones

Other hypernyms of cypress tree include conifer.

cypress tree (noun)	coniferous tree (noun)
any of numerous evergreen conifers of the genus Cupressus of north temperate regions having dark scalelike leaves and rounded cones	any gymnospermous tree or shrub bearing cones