Comptonia vs magnoliopsid genus

Comptonia and magnoliopsid genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Comptonia	Yes	No	No	No
magnoliopsid genus	Yes	No	No	No

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

Comptonia: one species: sweet fern
magnoliopsid genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Comptonia include dicot genus.

Comptonia (noun)	magnoliopsid genus (noun)
one species: sweet fern	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination