Listera ovata vs twayblade

Listera ovata and twayblade both are nouns.

Word	Noun	Adjective	Verb	Adverb
Listera ovata	Yes	No	No	No
twayblade	Yes	No	No	No

As nouns, Listera ovata and twayblade are synonyms defined as:

Listera ovata and twayblade: orchid having a pair of ovate leaves and a long slender raceme of green flowers sometimes tinged red-brown; Europe to central Asia

Listera ovata (noun)	twayblade (noun)
orchid having a pair of ovate leaves and a long slender raceme of green flowers sometimes tinged red-brown; Europe to central Asia	orchid having a pair of ovate leaves and a long slender raceme of green flowers sometimes tinged red-brown; Europe to central Asia
	an orchid of the genus Liparis having a pair of leaves