southern maidenhair vs common maidenhair

southern maidenhair and common maidenhair both are nouns.

Word	Noun	Adjective	Verb	Adverb
southern maidenhair	Yes	No	No	No
common maidenhair	Yes	No	No	No

As nouns, southern maidenhair and common maidenhair are synonyms defined as:

southern maidenhair and common maidenhair: delicate maidenhair fern with slender shining black leaf stalks; cosmopolitan

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

southern maidenhair (noun)	common maidenhair (noun)
delicate maidenhair fern with slender shining black leaf stalks; cosmopolitan	delicate maidenhair fern with slender shining black leaf stalks; cosmopolitan