owner vs saver

owner and saver both are nouns.

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

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

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

owner (noun)	saver (noun)
(law) someone who owns (is legal possessor of) a business	someone who saves (especially money)
a person who owns something	someone who saves something from danger or violence