mental home vs psychiatric hospital

mental home and psychiatric hospital both are nouns.

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

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

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

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

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