nervus saphenus vs saphenous nerve

nervus saphenus and saphenous nerve both are nouns.

Word	Noun	Adjective	Verb	Adverb
nervus saphenus	Yes	No	No	No
saphenous nerve	Yes	No	No	No

As nouns, nervus saphenus and saphenous nerve are synonyms defined as:

nervus saphenus and saphenous nerve: a branch of the femoral nerve that supplies cutaneous branches to the inner aspect of the leg and foot

nervus saphenus (noun)	saphenous nerve (noun)
a branch of the femoral nerve that supplies cutaneous branches to the inner aspect of the leg and foot	a branch of the femoral nerve that supplies cutaneous branches to the inner aspect of the leg and foot