Cyclophorus lingua vs fern

Cyclophorus lingua and fern both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cyclophorus lingua	Yes	No	No	No
fern	Yes	No	No	No

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

Cyclophorus lingua: east Asian fern having fronds shaped like tongues; sometimes placed in genus Cyclophorus
fern: any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores

Cyclophorus lingua (noun)	fern (noun)
east Asian fern having fronds shaped like tongues; sometimes placed in genus Cyclophorus	any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores