creeping juniper vs Juniperus horizontalis

creeping juniper and Juniperus horizontalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
creeping juniper	Yes	No	No	No
Juniperus horizontalis	Yes	No	No	No

As nouns, creeping juniper and Juniperus horizontalis are synonyms defined as:

creeping juniper and Juniperus horizontalis: low to prostrate shrub of Canada and northern United States; bronzed purple in winter

creeping juniper (noun)	Juniperus horizontalis (noun)
low to prostrate shrub of Canada and northern United States; bronzed purple in winter	low to prostrate shrub of Canada and northern United States; bronzed purple in winter