locative case vs oblique case

locative case and oblique case both are nouns.

Word	Noun	Adjective	Verb	Adverb
locative case	Yes	No	No	No
oblique case	Yes	No	No	No

As nouns, oblique case is a hypernym of locative case; that is, oblique case is a word with a broader meaning than locative case:

locative case: A case used to indicate place, or the place where, or wherein.
oblique case: any grammatical case other than the nominative

Other hypernyms of locative case include oblique.

locative case (noun)	oblique case (noun)
A case used to indicate place, or the place where, or wherein.	any grammatical case other than the nominative