gradient vs spatial relation

gradient and spatial relation both are nouns.

Word	Noun	Adjective	Verb	Adverb
gradient	Yes	No	No	No
spatial relation	Yes	No	No	No

As nouns, spatial relation is a hypernym of gradient; that is, spatial relation is a word with a broader meaning than gradient:

gradient: the property possessed by a line or surface that departs from the horizontal
spatial relation: the spatial property of a place where or way in which something is situated

Other hypernyms of gradient include position.

gradient (noun)	spatial relation (noun)
the property possessed by a line or surface that departs from the horizontal	the spatial property of a place where or way in which something is situated
a graded change in the magnitude of some physical quantity or dimension