stamping ground vs hangout

stamping ground and hangout both are nouns.

Word	Noun	Adjective	Verb	Adverb
stamping ground	Yes	No	No	No
hangout	Yes	No	No	No

As nouns, stamping ground and hangout are synonyms defined as:

Other synonyms of stamping ground include haunt, repair, resort.

stamping ground (noun)	hangout (noun)
a frequently visited place	a frequently visited place