insane asylum vs asylum

insane asylum and asylum both are nouns.

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

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

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

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

insane asylum (noun)	asylum (noun)
a hospital for mentally incompetent or unbalanced person	a hospital for mentally incompetent or unbalanced person
	a shelter from danger or hardship