psychiatric hospital vs mental hospital

psychiatric hospital and mental hospital both are nouns.

Word	Noun	Adjective	Verb	Adverb
psychiatric hospital	Yes	No	No	No
mental hospital	Yes	No	No	No

As nouns, psychiatric hospital and mental hospital are synonyms defined as:

psychiatric hospital and mental hospital: a hospital for mentally incompetent or unbalanced person

Other synonyms of psychiatric hospital include asylum, insane asylum, institution, mental home, mental institution.

psychiatric hospital (noun)	mental hospital (noun)
a hospital for mentally incompetent or unbalanced person	a hospital for mentally incompetent or unbalanced person