computer program vs software

computer program and software both are nouns.

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

As nouns, software is a hypernym of computer program; that is, software is a word with a broader meaning than computer program:

computer program: (computer science) a sequence of instructions that a computer can interpret and execute
software: (computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory

Other hypernyms of computer program include computer software, package, software package, software program, software system.

computer program (noun)	software (noun)
(computer science) a sequence of instructions that a computer can interpret and execute	(computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory