leathery polypody vs coast polypody

leathery polypody and coast polypody both are nouns.

Word	Noun	Adjective	Verb	Adverb
leathery polypody	Yes	No	No	No
coast polypody	Yes	No	No	No

As nouns, leathery polypody and coast polypody are synonyms defined as:

leathery polypody and coast polypody: stiff leathery-leaved fern of western North America having ovate fronds parted to the midrib

Other synonyms of leathery polypody include leatherleaf, Polypodium scouleri.

leathery polypody (noun)	coast polypody (noun)
stiff leathery-leaved fern of western North America having ovate fronds parted to the midrib	stiff leathery-leaved fern of western North America having ovate fronds parted to the midrib