Shareware and Software system

Shareware noun - Software that is available free of charge; may be distributed for evaluation with a fee requested for additional features or a manual etc..

Software system and shareware are semantically related. In some cases you can use "Software system" instead a noun "Shareware".

Software system 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.

Shareware and software system are semantically related. Sometimes you can replace term "Shareware" with "Software system", this terms are similar.