summercaters vs vacationist

summercaters and vacationist both are nouns.

Word	Noun	Adjective	Verb	Adverb
summercaters	Yes	No	No	No
vacationist	Yes	No	No	No

As nouns, vacationist is a hypernym of summercaters; that is, vacationist is a word with a broader meaning than summercaters:

summercaters: (Maine colloquial) temporary summer residents of coastal Maine
vacationist: someone on vacation; someone who is devoting time to pleasure or relaxation rather than to work

Other hypernyms of summercaters include vacationer.

summercaters (noun)	vacationist (noun)
(Maine colloquial) temporary summer residents of coastal Maine	someone on vacation; someone who is devoting time to pleasure or relaxation rather than to work