vulcanization vs vulcanisation

vulcanization and vulcanisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
vulcanization	Yes	No	No	No
vulcanisation	Yes	No	No	No

As nouns, vulcanization and vulcanisation are synonyms defined as:

vulcanization and vulcanisation: process of treating rubber or rubberlike materials with sulphur at great heat to improve elasticity and strength or to harden them

vulcanization (noun)	vulcanisation (noun)
process of treating rubber or rubberlike materials with sulphur at great heat to improve elasticity and strength or to harden them	process of treating rubber or rubberlike materials with sulphur at great heat to improve elasticity and strength or to harden them