hospitalisation vs hospitalization

hospitalisation and hospitalization both are nouns.

Word	Noun	Adjective	Verb	Adverb
hospitalisation	Yes	No	No	No
hospitalization	Yes	No	No	No

As nouns, hospitalisation and hospitalization are synonyms defined as:

hospitalisation and hospitalization: placing in medical care in a hospital

Other synonyms of hospitalisation include hospital care.

hospitalisation (noun)	hospitalization (noun)
placing in medical care in a hospital	placing in medical care in a hospital
	insurance that pays all or part of a patient's hospital expense
	the condition of being treated as a patient in a hospital
	a period of time when you are confined to a hospital