Juniperus sabina vs juniper

Juniperus sabina and juniper both are nouns.

Word	Noun	Adjective	Verb	Adverb
Juniperus sabina	Yes	No	No	No
juniper	Yes	No	No	No

As nouns, juniper is a hypernym of Juniperus sabina; that is, juniper is a word with a broader meaning than Juniperus sabina:

Juniperus sabina (noun)	juniper (noun)
procumbent or spreading juniper	wood of a coniferous shrub or small tree with berrylike cones
	desert shrub of Syria and Arabia having small white flowers; constitutes the juniper of the Old Testament; sometimes placed in genus Genista
	coniferous shrub or small tree with berrylike cones