Kalmia angustifolia vs kalmia

Kalmia angustifolia and kalmia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kalmia angustifolia	Yes	No	No	No
kalmia	Yes	No	No	No

As nouns, kalmia is a hypernym of Kalmia angustifolia; that is, kalmia is a word with a broader meaning than Kalmia angustifolia:

Kalmia angustifolia: North American dwarf shrub resembling mountain laurel but having narrower leaves and small red flowers; poisonous to young stock
kalmia: any plant of the genus Kalmia

Kalmia angustifolia (noun)	kalmia (noun)
North American dwarf shrub resembling mountain laurel but having narrower leaves and small red flowers; poisonous to young stock	any plant of the genus Kalmia