spinal canal vs canalis vertebralis

spinal canal and canalis vertebralis both are nouns.

Word	Noun	Adjective	Verb	Adverb
spinal canal	Yes	No	No	No
canalis vertebralis	Yes	No	No	No

As nouns, spinal canal and canalis vertebralis are synonyms defined as:

spinal canal and canalis vertebralis: the canal in successive vertebrae through which the spinal cord passes

Other synonyms of spinal canal include vertebral canal.

spinal canal (noun)	canalis vertebralis (noun)
the canal in successive vertebrae through which the spinal cord passes	the canal in successive vertebrae through which the spinal cord passes