mental institution vs mental home

mental institution and mental home both are nouns.

Word	Noun	Adjective	Verb	Adverb
mental institution	Yes	No	No	No
mental home	Yes	No	No	No

As nouns, mental institution and mental home are synonyms defined as:

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

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

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