Is Forex an OTC derivative?

Could you please clarify for me if Forex trading qualifies as an Over-The-Counter (OTC) derivative? I'm trying to understand the distinction between different types of financial instruments and how they operate within the market. Could you elaborate on the characteristics of Forex trading that make it fall under the OTC derivative category, if indeed it does? Additionally, would you mind explaining any regulatory considerations or risks associated with trading Forex as an OTC derivative? Thank you for your assistance in clarifying this matter.