lazaretto vs lazar house

lazaretto and lazar house both are nouns.

Word	Noun	Adjective	Verb	Adverb
lazaretto	Yes	No	No	No
lazar house	Yes	No	No	No

As nouns, lazaretto and lazar house are synonyms defined as:

lazaretto and lazar house: hospital for persons with infectious diseases (especially leprosy)

Other synonyms of lazaretto include lazaret, lazarette, pesthouse.

lazaretto (noun)	lazar house (noun)
hospital for persons with infectious diseases (especially leprosy)	hospital for persons with infectious diseases (especially leprosy)
a small locker at the stern of a boat or between decks of a ship