lazaret vs lazaretto

lazaret and lazaretto both are nouns.

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

As nouns, lazaret and lazaretto are synonyms defined as:

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

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

lazaret (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