Is there a difference between a safe and a gun safe?

Could you elaborate on the distinction between a regular safe and a gun safe? I've heard the terms used interchangeably, but I'm curious if there are any significant differences in their design, purpose, or security features. For instance, does a gun safe offer more protection against fire or burglary? Are there specific regulations or safety standards that gun safes must adhere to? And, for someone considering purchasing a safe to store valuables and firearms, how would you recommend determining the most suitable option? Thank you for clarifying the nuances between these two types of safes.