posterior root vs dorsal root

posterior root and dorsal root both are nouns.

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

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

posterior root and dorsal 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 posterior root include dorsal horn, posterior horn.

posterior root (noun)	dorsal 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