JWT, short for JSON Web Token, is a secure and compact way of transmitting information between parties. It is commonly used in web applications for authentication and authorization purposes. Some synonyms for the term JWT are token, access token, security token, JSON token, and web token. These terms refer to the same concept of a data structure containing information that can be verified and trusted by parties involved in an exchange. Each term might be used interchangeably or specifically within the context of a particular implementation. Regardless of the specific synonym used, the importance of JWT in securing web applications cannot be overstated.