moccasin flower vs Cypripedium acaule

moccasin flower and Cypripedium acaule both are nouns.

Word	Noun	Adjective	Verb	Adverb
moccasin flower	Yes	No	No	No
Cypripedium acaule	Yes	No	No	No

As nouns, moccasin flower and Cypripedium acaule are synonyms defined as:

moccasin flower and Cypripedium acaule: once common rose pink woodland orchid of eastern North America

Other synonyms of moccasin flower include nerveroot.

moccasin flower (noun)	Cypripedium acaule (noun)
once common rose pink woodland orchid of eastern North America	once common rose pink woodland orchid of eastern North America