ransomware vs malware

ransomware and malware both are nouns.

Word	Noun	Adjective	Verb	Adverb
ransomware	Yes	No	No	No
malware	Yes	No	No	No

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

ransomware: malicious software that makes a computer unusable unless a payment is made to the attacker
malware: malicious software, designed to break into a system

ransomware (noun)	malware (noun)
malicious software that makes a computer unusable unless a payment is made to the attacker	malicious software, designed to break into a system