felt fern vs tongue fern

felt fern and tongue fern both are nouns.

Word	Noun	Adjective	Verb	Adverb
felt fern	Yes	No	No	No
tongue fern	Yes	No	No	No

As nouns, felt fern and tongue fern are synonyms defined as:

felt fern and tongue fern: east Asian fern having fronds shaped like tongues; sometimes placed in genus Cyclophorus

Other synonyms of felt fern include Cyclophorus lingua, Pyrrosia lingua.

felt fern (noun)	tongue fern (noun)
east Asian fern having fronds shaped like tongues; sometimes placed in genus Cyclophorus	east Asian fern having fronds shaped like tongues; sometimes placed in genus Cyclophorus