residency vs human activity

residency and human activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
residency	Yes	No	No	No
human activity	Yes	No	No	No

As nouns, human activity is a hypernym of residency; that is, human activity is a word with a broader meaning than residency:

Other hypernyms of residency include act, deed, human action.

residency (noun)	human activity (noun)
the act of dwelling in a place	something that people do or cause to happen
the position of physician who is receiving special training in a hospital (usually after completing an internship)