Platanthera leucophea vs orchid

Platanthera leucophea and orchid both are nouns.

Word	Noun	Adjective	Verb	Adverb
Platanthera leucophea	Yes	No	No	No
orchid	Yes	No	No	No

As nouns, orchid is a hypernym of Platanthera leucophea; that is, orchid is a word with a broader meaning than Platanthera leucophea:

Platanthera leucophea: of central North America; a threatened species
orchid: any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors

Other hypernyms of Platanthera leucophea include orchidaceous plant.

Platanthera leucophea (noun)	orchid (noun)
of central North America; a threatened species	any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors