maidenhair fern vs maidenhair

maidenhair fern and maidenhair both are nouns.

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

As nouns, maidenhair fern and maidenhair are synonyms defined as:

maidenhair fern and maidenhair: any of various small to large terrestrial ferns of the genus Adiantum having delicate palmately branched fronds

maidenhair fern (noun)	maidenhair (noun)
any of various small to large terrestrial ferns of the genus Adiantum having delicate palmately branched fronds	any of various small to large terrestrial ferns of the genus Adiantum having delicate palmately branched fronds