programme vs software system

programme and software system both are nouns.

Word	Noun	Adjective	Verb	Adverb
programme	Yes	No	Yes	No
software system	Yes	No	No	No

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

programme: (computer science) a sequence of instructions that a computer can interpret and execute
software system: (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 programme include computer software, package, software, software package, software program.

programme (noun)	software system (noun)
a performance (or series of performances) at a public presentation	(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
a series of steps to be carried out or goals to be accomplished
a system of projects or services intended to meet a public need
an announcement of the events that will occur as part of a theatrical or sporting event
a radio or television show
(computer science) a sequence of instructions that a computer can interpret and execute
an integrated course of academic studies

programme (verb)	software system (verb)
arrange a program of or for
write a computer program