bowdlerisation vs bowdlerization

bowdlerisation and bowdlerization both are nouns.

Word	Noun	Adjective	Verb	Adverb
bowdlerisation	Yes	No	No	No
bowdlerization	Yes	No	No	No

As nouns, bowdlerisation and bowdlerization are synonyms defined as:

bowdlerisation and bowdlerization: the act of deleting or modifying all passages considered to be indecent

As nouns, bowdlerisation and bowdlerization are synonyms defined as:

bowdlerisation and bowdlerization: written material that has been bowdlerized

bowdlerisation (noun)	bowdlerization (noun)
the act of deleting or modifying all passages considered to be indecent	the act of deleting or modifying all passages considered to be indecent
written material that has been bowdlerized	written material that has been bowdlerized