genus Psilophyton vs fern genus

genus Psilophyton and fern genus both are nouns.

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

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

genus Psilophyton: type genus of the Psilophytaceae: genus of small wiry herbaceous Paleozoic plants with underground rhizomes and apical sporangia
fern genus: genera of ferns and fern allies

genus Psilophyton (noun)	fern genus (noun)
type genus of the Psilophytaceae: genus of small wiry herbaceous Paleozoic plants with underground rhizomes and apical sporangia	genera of ferns and fern allies