mental home vs insane asylum

mental home and insane asylum both are nouns.

Word	Noun	Adjective	Verb	Adverb
mental home	Yes	No	No	No
insane asylum	Yes	No	No	No

As nouns, mental home and insane asylum are synonyms defined as:

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

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

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