sentimentalisation vs sentimentalization

sentimentalisation and sentimentalization both are nouns.

Word	Noun	Adjective	Verb	Adverb
sentimentalisation	Yes	No	No	No
sentimentalization	Yes	No	No	No

As nouns, sentimentalisation and sentimentalization are synonyms defined as:

sentimentalisation and sentimentalization: the act of indulging in sentiment

Other synonyms of sentimentalisation include romanticisation, romanticization.

sentimentalisation (noun)	sentimentalization (noun)
the act of indulging in sentiment	the act of indulging in sentiment