lazarette vs lazaretto

lazarette and lazaretto both are nouns.

Word	Noun	Adjective	Verb	Adverb
lazarette	Yes	No	No	No
lazaretto	Yes	No	No	No

As nouns, lazarette and lazaretto are synonyms defined as:

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

Other synonyms of lazarette include lazar house, lazaret, pesthouse.

lazarette (noun)	lazaretto (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