vascular ray vs medullary ray

vascular ray and medullary ray both are nouns.

Word	Noun	Adjective	Verb	Adverb
vascular ray	Yes	No	No	No
medullary ray	Yes	No	No	No

As nouns, vascular ray and medullary ray are synonyms defined as:

vascular ray and medullary ray: a sheet of vascular tissue separating the vascular bundles

vascular ray (noun)	medullary ray (noun)
a sheet of vascular tissue separating the vascular bundles	a sheet of vascular tissue separating the vascular bundles