It may depend on who you ask so a clarification of definitions is important! Let's start with Cannabis, which is hemp, and includes many expressions of similar but very different characteristics.Let's use an analogy that we've found to be helpful. Corn comes in many forms. Popcorn is what you eat at the movies, sweet corn is a summer treat, and field corn is mainly raised for animals- it's all corn but was selected for certain desirable traits.Generally speaking "hemp" is used when describing low THC cannabis that includes characteristics for use for fiber, CDB, or seeds. Marijuana is always associated with high THC characteristics. All cannabis plants have all of these characteristics but certain ones have been selected for desirable traits like our corn example.