orchidaceous plant vs orchid

orchidaceous plant and orchid both are nouns.

Word	Noun	Adjective	Verb	Adverb
orchidaceous plant	Yes	No	No	No
orchid	Yes	No	No	No

As nouns, orchidaceous plant and orchid are synonyms defined as:

orchidaceous plant and orchid: any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors

orchidaceous plant (noun)	orchid (noun)
any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors	any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors