Cypripedium acaule vs moccasin flower

Cypripedium acaule and moccasin flower both are nouns.

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

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

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

Other synonyms of Cypripedium acaule include nerveroot.

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