butterfly orchis vs butterfly orchid

butterfly orchis and butterfly orchid both are nouns.

Word	Noun	Adjective	Verb	Adverb
butterfly orchis	Yes	No	No	No
butterfly orchid	Yes	No	No	No

As nouns, butterfly orchis and butterfly orchid are synonyms defined as:

butterfly orchis and butterfly orchid: Mediterranean orchid having usually purple flowers with a fan-shaped spotted or striped rose-red lip

Other synonyms of butterfly orchis include Orchis papilionaceae.

As nouns, butterfly orchis and butterfly orchid are synonyms defined as:

butterfly orchis and butterfly orchid: Mexican epiphytic orchid having pale green or yellow-green flowers with white purple-veined lip

Other synonyms of butterfly orchis include Encyclia venosa, Epidendrum venosum.

butterfly orchis (noun)	butterfly orchid (noun)
Mediterranean orchid having usually purple flowers with a fan-shaped spotted or striped rose-red lip	any orchid of the genus Psychopsis: spectacular large tiger-striped orchids
Mexican epiphytic orchid having pale green or yellow-green flowers with white purple-veined lip	Mediterranean orchid having usually purple flowers with a fan-shaped spotted or striped rose-red lip
	orchid of Florida and the Bahamas having showy brightly colored flowers; sometimes placed in genus Epidendrum
	Mexican epiphytic orchid having pale green or yellow-green flowers with white purple-veined lip
	any orchid of the genus Oncidium: characterized by slender branching sprays of small yellow and brown flowers; often grown as houseplants