occupier vs coaster

occupier and coaster both are nouns.

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

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

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

occupier (noun)	coaster (noun)
someone who lives at a particular place for a prolonged period or who was born there	a covering (plate or mat) that protects the surface of a table (i.e., from the condensation on a cold glass or bottle)
a member of a military force who is residing in a conquered foreign country	someone who coasts
	a resident of a coastal area