vascular ray vs vascular tissue

vascular ray and vascular tissue both are nouns.

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

As nouns, vascular tissue is a hypernym of vascular ray; that is, vascular tissue is a word with a broader meaning than vascular ray:

vascular ray: a sheet of vascular tissue separating the vascular bundles
vascular tissue: tissue that conducts water and nutrients through the plant body in higher plants

vascular ray (noun)	vascular tissue (noun)
a sheet of vascular tissue separating the vascular bundles	tissue that conducts water and nutrients through the plant body in higher plants