resort hotel vs spa

resort hotel and spa both are nouns.

Word	Noun	Adjective	Verb	Adverb
resort hotel	Yes	No	No	No
spa	Yes	No	No	No

As nouns, resort hotel and spa are synonyms defined as:

resort hotel (noun)	spa (noun)
a fashionable hotel usually in a resort area	a fashionable hotel usually in a resort area
a hotel located in a resort area	a place of business with equipment and facilities for exercising and improving physical fitness
	a health resort near a spring or at the seaside