Venus'-hair fern vs Venus maidenhair

Venus'-hair fern and Venus maidenhair both are nouns.

Word	Noun	Adjective	Verb	Adverb
Venus'-hair fern	Yes	No	No	No
Venus maidenhair	Yes	No	No	No

As nouns, Venus'-hair fern and Venus maidenhair are synonyms defined as:

Venus'-hair fern and Venus maidenhair: delicate maidenhair fern with slender shining black leaf stalks; cosmopolitan

Other synonyms of Venus'-hair fern include Adiantum capillus-veneris, common maidenhair, southern maidenhair, Venushair.

Venus'-hair fern (noun)	Venus maidenhair (noun)
delicate maidenhair fern with slender shining black leaf stalks; cosmopolitan	delicate maidenhair fern with slender shining black leaf stalks; cosmopolitan