systems program vs systems software

systems program and systems software both are nouns.

Word	Noun	Adjective	Verb	Adverb
systems program	Yes	No	No	No
systems software	Yes	No	No	No

As nouns, systems program and systems software are synonyms defined as:

systems program and systems software: a program (as an operating system or compiler or utility program) that controls some aspect of the operation of a computer

Other synonyms of systems program include system program.

systems program (noun)	systems software (noun)
a program (as an operating system or compiler or utility program) that controls some aspect of the operation of a computer	a program (as an operating system or compiler or utility program) that controls some aspect of the operation of a computer