epidendron vs orchid

epidendron and orchid both are nouns.

Word	Noun	Adjective	Verb	Adverb
epidendron	Yes	No	No	No
orchid	Yes	No	No	No

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

epidendron: any of various orchids of the genus Epidendrum
orchid: any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors

Other hypernyms of epidendron include orchidaceous plant.

epidendron (noun)	orchid (noun)
any of various orchids of the genus Epidendrum	any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors