Pteris multifida vs fern

Pteris multifida and fern both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pteris multifida	Yes	No	No	No
fern	Yes	No	No	No

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

Pteris multifida: Asiatic fern introduced in America
fern: any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores

Pteris multifida (noun)	fern (noun)
Asiatic fern introduced in America	any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores