coaster vs occupant

coaster and occupant both are nouns.

Word	Noun	Adjective	Verb	Adverb
coaster	Yes	No	No	No
occupant	Yes	No	No	No

As nouns, occupant is a hypernym of coaster; that is, occupant is a word with a broader meaning than coaster:

coaster: a resident of a coastal area
occupant: someone who lives at a particular place for a prolonged period or who was born there

Other hypernyms of coaster include occupier, resident.

coaster (noun)	occupant (noun)
a covering (plate or mat) that protects the surface of a table (i.e., from the condensation on a cold glass or bottle)	someone who lives at a particular place for a prolonged period or who was born there
someone who coasts
a resident of a coastal area