Arthropteris vs fern genus

Arthropteris and fern genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arthropteris	Yes	No	No	No
fern genus	Yes	No	No	No

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

Arthropteris: tropical and subtropical Old World epiphytic or lithophytic ferns
fern genus: genera of ferns and fern allies

Arthropteris (noun)	fern genus (noun)
tropical and subtropical Old World epiphytic or lithophytic ferns	genera of ferns and fern allies