owner vs householder

owner and householder both are nouns.

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

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

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

owner (noun)	householder (noun)
(law) someone who owns (is legal possessor of) a business	someone who owns a home
a person who owns something