What is the difference between Crypto malware and ransomware?

Could you elaborate on the key distinctions between crypto malware and ransomware? I'm particularly interested in understanding how they differ in their operation, targets, and potential impact. Crypto malware seems to focus on stealing cryptocurrency, while ransomware typically holds data hostage for a ransom. Could you explain how these two types of malware work and how organizations and individuals can best defend against them? Understanding the nuances between these threats is crucial for effective cybersecurity measures.