anterior root vs ventral horn

anterior root and ventral horn both are nouns.

Word	Noun	Adjective	Verb	Adverb
anterior root	Yes	No	No	No
ventral horn	Yes	No	No	No

As nouns, anterior root and ventral horn are synonyms defined as:

anterior root and ventral horn: one of the two roots of a spinal nerve that passes ventrally from the spinal cord and that consists of motor fibers

Other synonyms of anterior root include anterior horn, ventral root.

anterior root (noun)	ventral horn (noun)
one of the two roots of a spinal nerve that passes ventrally from the spinal cord and that consists of motor fibers	one of the two roots of a spinal nerve that passes ventrally from the spinal cord and that consists of motor fibers