program optimization vs software optimisation

program optimization and software optimisation both are nouns.

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

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

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

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

program optimization (noun)	software optimisation (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.