holly fern vs Polystichum aculeatum

holly fern and Polystichum aculeatum both are nouns.

Word	Noun	Adjective	Verb	Adverb
holly fern	Yes	No	No	No
Polystichum aculeatum	Yes	No	No	No

As nouns, holly fern and Polystichum aculeatum are synonyms defined as:

holly fern and Polystichum aculeatum: tropical Old World fern having glossy fronds suggestive of holly; sometimes placed in genus Polystichum

Other synonyms of holly fern include Cyrtomium aculeatum.

holly fern (noun)	Polystichum aculeatum (noun)
any of various ferns of the genus Polystichum having fronds with texture and gloss like holly	tropical Old World fern having glossy fronds suggestive of holly; sometimes placed in genus Polystichum
tropical Old World fern having glossy fronds suggestive of holly; sometimes placed in genus Polystichum