efferent vs motorial

efferent is a noun but motorial is not a noun.

Word	Noun	Adjective	Verb	Adverb
efferent	Yes	Yes	No	No
motorial	No	Yes	No	No

As adjectives, efferent and motorial are synonyms defined as:

efferent and motorial: of nerves and nerve impulses; conveying information away from the CNS

efferent (noun)	motorial (noun)
a nerve that conveys impulses toward or to muscles or glands

efferent (adjective)	motorial (adjective)
of nerves and nerve impulses; conveying information away from the CNS	of nerves and nerve impulses; conveying information away from the CNS