cypress vs coniferous tree

cypress and coniferous tree both are nouns.

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

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

cypress: 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 include conifer.

cypress (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
wood of any of various cypress trees especially of the genus Cupressus