Systems software and Software

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

Software and systems software are semantically related In some cases you can replace term "Software" with "Systems software", this terms are similar.

Software noun - (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.

Systems software and software are semantically related in computer program topic. You can use "Systems software" instead a noun "Software".