sciatic nerve vs nervus ischiadicus

sciatic nerve and nervus ischiadicus both are nouns.

Word	Noun	Adjective	Verb	Adverb
sciatic nerve	Yes	No	No	No
nervus ischiadicus	Yes	No	No	No

As nouns, sciatic nerve and nervus ischiadicus are synonyms defined as:

sciatic nerve and nervus ischiadicus: arises from the sacral plexus and passes about halfway down the thigh where it divides into the common peroneal and tibial nerves

sciatic nerve (noun)	nervus ischiadicus (noun)
arises from the sacral plexus and passes about halfway down the thigh where it divides into the common peroneal and tibial nerves	arises from the sacral plexus and passes about halfway down the thigh where it divides into the common peroneal and tibial nerves