creeping willow vs Salix repens

creeping willow and Salix repens both are nouns.

Word	Noun	Adjective	Verb	Adverb
creeping willow	Yes	No	No	No
Salix repens	Yes	No	No	No

As nouns, creeping willow and Salix repens are synonyms defined as:

creeping willow and Salix repens: small trailing bush of Europe and Asia having straggling branches with silky green leaves of which several varieties are cultivated

creeping willow (noun)	Salix repens (noun)
small trailing bush of Europe and Asia having straggling branches with silky green leaves of which several varieties are cultivated	small trailing bush of Europe and Asia having straggling branches with silky green leaves of which several varieties are cultivated