leatherleaf vs shrub

leatherleaf and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
leatherleaf	Yes	No	No	No
shrub	Yes	No	No	No

As nouns, shrub is a hypernym of leatherleaf; that is, shrub is a word with a broader meaning than leatherleaf:

leatherleaf: north temperate bog shrub with evergreen leathery leaves and small white cylindrical flowers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of leatherleaf include bush.

leatherleaf (noun)	shrub (noun)
north temperate bog shrub with evergreen leathery leaves and small white cylindrical flowers	a low woody perennial plant usually having several major stems
stiff leathery-leaved fern of western North America having ovate fronds parted to the midrib