dorsal root vs posterior root

dorsal root and posterior root both are nouns.

Word	Noun	Adjective	Verb	Adverb
dorsal root	Yes	No	No	No
posterior root	Yes	No	No	No

As nouns, dorsal root and posterior root are synonyms defined as:

dorsal root and posterior root: one of two roots of a spinal nerve that passes dorsally from the spinal cord and that consists of sensory fibers

Other synonyms of dorsal root include dorsal horn, posterior horn.

dorsal root (noun)	posterior root (noun)
one of two roots of a spinal nerve that passes dorsally from the spinal cord and that consists of sensory fibers	one of two roots of a spinal nerve that passes dorsally from the spinal cord and that consists of sensory fibers