possessor vs saver

possessor and saver both are nouns.

Word	Noun	Adjective	Verb	Adverb
possessor	Yes	No	No	No
saver	Yes	No	No	No

As nouns, saver is a hyponym of possessor; that is, saver is a word with a more specific, narrower meaning than possessor:

Other hyponyms of possessor include holder, homeowner, householder, part-owner, shipowner.

possessor (noun)	saver (noun)
a person who owns something	someone who saves (especially money)
	someone who saves something from danger or violence