Spiranthes vs liliopsid genus

Spiranthes and liliopsid genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spiranthes	Yes	No	No	No
liliopsid genus	Yes	No	No	No

As nouns, liliopsid genus is a hypernym of Spiranthes; that is, liliopsid genus is a word with a broader meaning than Spiranthes:

Spiranthes: large cosmopolitan genus of white-flowered terrestrial orchids
liliopsid genus: genus of flowering plants having a single cotyledon (embryonic leaf) in the seed

Other hypernyms of Spiranthes include monocot genus.

Spiranthes (noun)	liliopsid genus (noun)
large cosmopolitan genus of white-flowered terrestrial orchids	genus of flowering plants having a single cotyledon (embryonic leaf) in the seed