genus Mespilus vs medlar

genus Mespilus and medlar both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Mespilus	Yes	No	No	No
medlar	Yes	No	No	No

genus Mespilus (noun)	medlar (noun)
medlars	crabapple-like fruit used for preserves
	a South African globular fruit with brown leathery skin and pithy flesh having a sweet-acid taste
	small deciduous Eurasian tree cultivated for its fruit that resemble crab apples
	small deciduous tree of southern Africa having edible fruit