cadaster vs cadastre

cadaster and cadastre both are nouns.

Word	Noun	Adjective	Verb	Adverb
cadaster	Yes	No	No	No
cadastre	Yes	No	No	No

As nouns, cadaster and cadastre are synonyms defined as:

cadaster and cadastre: a public register showing the details of ownership and value of land; made for the purpose of taxation

cadaster (noun)	cadastre (noun)
a public register showing the details of ownership and value of land; made for the purpose of taxation	a public register showing the details of ownership and value of land; made for the purpose of taxation