southern cypress vs cypress

southern cypress and cypress both are nouns.

Word	Noun	Adjective	Verb	Adverb
southern cypress	Yes	No	No	No
cypress	Yes	No	No	No

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

southern cypress: common cypress of southeastern United States having trunk expanded at base; found in coastal swamps and flooding river bottoms
cypress: any of numerous evergreen conifers of the genus Cupressus of north temperate regions having dark scalelike leaves and rounded cones

Other hypernyms of southern cypress include cypress tree.

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

southern cypress: wood of a common cypress of southeastern United States having trunk expanded at base; found in coastal swamps and flooding river bottoms
cypress: wood of any of various cypress trees especially of the genus Cupressus

southern cypress (noun)	cypress (noun)
common cypress of southeastern United States having trunk expanded at base; found in coastal swamps and flooding river bottoms	any of numerous evergreen conifers of the genus Cupressus of north temperate regions having dark scalelike leaves and rounded cones
wood of a common cypress of southeastern United States having trunk expanded at base; found in coastal swamps and flooding river bottoms	wood of any of various cypress trees especially of the genus Cupressus