psychiatric hospital vs insane asylum

psychiatric hospital and insane asylum both are nouns.

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

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

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

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

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