sentimentalisation vs romanticization

sentimentalisation and romanticization both are nouns.

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

As nouns, sentimentalisation and romanticization are synonyms defined as:

sentimentalisation and romanticization: the act of indulging in sentiment

Other synonyms of sentimentalisation include romanticisation, sentimentalization.

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