boarder vs renter

boarder and renter both are nouns.

Word	Noun	Adjective	Verb	Adverb
boarder	Yes	No	No	No
renter	Yes	No	No	No

As nouns, renter is a hypernym of boarder; that is, renter is a word with a broader meaning than boarder:

boarder: a tenant in someone's house
renter: someone who pays rent to use land or a building or a car that is owned by someone else

Other hypernyms of boarder include tenant.

boarder (noun)	renter (noun)
a tenant in someone's house	someone who pays rent to use land or a building or a car that is owned by someone else
a pupil who lives at school during term time	an owner of property who receives payment for its use by another person
someone who forces their way aboard ship