stele vs vascular tissue

stele and vascular tissue both are nouns.

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

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

stele: the usually cylindrical central vascular portion of the axis of a vascular plant
vascular tissue: tissue that conducts water and nutrients through the plant body in higher plants

stele (noun)	vascular tissue (noun)
an ancient upright stone slab bearing markings	tissue that conducts water and nutrients through the plant body in higher plants
the usually cylindrical central vascular portion of the axis of a vascular plant