Christmas fern vs dagger fern

Christmas fern and dagger fern both are nouns.

Word	Noun	Adjective	Verb	Adverb
Christmas fern	Yes	No	No	No
dagger fern	Yes	No	No	No

As nouns, Christmas fern and dagger fern are synonyms defined as:

Christmas fern and dagger fern: North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds

Other synonyms of Christmas fern include canker brake, evergreen wood fern, Polystichum acrostichoides.

Christmas fern (noun)	dagger fern (noun)
North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds	North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds