sanitarium vs sanatorium

sanitarium and sanatorium both are nouns.

Word	Noun	Adjective	Verb	Adverb
sanitarium	Yes	No	No	No
sanatorium	Yes	No	No	No

As nouns, sanitarium and sanatorium are synonyms defined as:

sanitarium and sanatorium: a hospital for recuperation or for the treatment of chronic diseases

Other synonyms of sanitarium include sanatarium.

sanitarium (noun)	sanatorium (noun)
a hospital for recuperation or for the treatment of chronic diseases	a hospital for recuperation or for the treatment of chronic diseases
	pejorative terms for an insane asylum