malware vs software system

malware and software system both are nouns.

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

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

malware: malicious software, designed to break into a system
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 malware include computer software, package, software, software package, software program.

malware (noun)	software system (noun)
malicious software, designed to break into a 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