leather fern vs ten-day fern

leather fern and ten-day fern both are nouns.

Word	Noun	Adjective	Verb	Adverb
leather fern	Yes	No	No	No
ten-day fern	Yes	No	No	No

As nouns, leather fern and ten-day fern are synonyms defined as:

leather fern and ten-day fern: widely distributed fern of tropical Southern Hemisphere having leathery pinnatifid fronds

Other synonyms of leather fern include leatherleaf fern, Polystichum adiantiformis, Rumohra adiantiformis.

leather fern (noun)	ten-day fern (noun)
widely distributed fern of tropical Southern Hemisphere having leathery pinnatifid fronds	widely distributed fern of tropical Southern Hemisphere having leathery pinnatifid fronds
stout tropical swamp fern (especially tropical America) having large fronds with golden yellow sporangia covering the undersides