vertebral arch vs neural arch

vertebral arch and neural arch both are nouns.

Word	Noun	Adjective	Verb	Adverb
vertebral arch	Yes	No	No	No
neural arch	Yes	No	No	No

As nouns, vertebral arch and neural arch are synonyms defined as:

vertebral arch and neural arch: a structure arising dorsally from a vertebral centrum and enclosing the spinal cord

vertebral arch (noun)	neural arch (noun)
a structure arising dorsally from a vertebral centrum and enclosing the spinal cord	a structure arising dorsally from a vertebral centrum and enclosing the spinal cord