Conflict: Refers to a disagreement or clash between different parties or entities. In the case of marijuana laws and federalism, conflict can occur when there is discord between federal regulations that classify marijuana as illegal and state laws that permit its use.
Enforcement: It involves carrying out or implementing certain rules or laws. When related to state marijuana laws, enforcement refers to how authorities apply regulations regarding cultivation, sale, possession, and usage of cannabis.
Preemption: This term describes when one level of government (usually federal) overrides or takes precedence over another level of government (such as states). In relation to state marijuana laws and federalism, preemption can occur if federal regulations on marijuana are enforced despite contrary state legislation.