program optimisation vs program optimization

program optimisation and program optimization both are nouns.

Word	Noun	Adjective	Verb	Adverb
program optimisation	Yes	No	No	No
program optimization	Yes	No	No	No

As nouns, program optimisation and program optimization are synonyms defined as:

program optimisation and program optimization: the process of modifying a software system to make some aspect of it work more efficiently or use fewer resources.

Other synonyms of program optimisation include software optimisation, software optimization.

program optimisation (noun)	program optimization (noun)
the process of modifying a software system to make some aspect of it work more efficiently or use fewer resources.	the process of modifying a software system to make some aspect of it work more efficiently or use fewer resources.