residence hall vs dorm

residence hall and dorm both are nouns.

Word	Noun	Adjective	Verb	Adverb
residence hall	Yes	No	No	No
dorm	Yes	No	No	No

As nouns, residence hall and dorm are synonyms defined as:

residence hall and dorm: a college or university building containing living quarters for students

Other synonyms of residence hall include dormitory, hall, student residence.

residence hall (noun)	dorm (noun)
a college or university building containing living quarters for students	a college or university building containing living quarters for students