The term "drug courier" refers to an individual who transports illegal substances from one location to another. Though this term is commonly used, there are several other synonyms that can be employed to describe such a person. Examples include "drug mule," which implies that the individual is carrying the drugs inside their body, "drug transporter," which suggests a more professional and organized operation, and "drug smuggler," which puts more emphasis on the illegal aspect of the activity. Other synonyms include drug runner, drug trafficker, and drug transporter. Each of these terms can be used interchangeably with drug courier, offering a more varied vocabulary for discussing these illegal activities.