Filicinae vs fern

Filicinae and fern both are nouns.

Word	Noun	Adjective	Verb	Adverb
Filicinae	Yes	No	No	No
fern	Yes	No	No	No

Filicinae (noun)	fern (noun)
ferns	any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores