spatial relation vs posterior

spatial relation and posterior both are nouns.

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

spatial relation (noun)	posterior (noun)
the spatial property of a place where or way in which something is situated	the fleshy part of the human body that you sit on
	a tooth situated at the back of the mouth

spatial relation (adjective)	posterior (adjective)
	located at or near or behind a part or near the end of a structure
	coming at a subsequent time or stage