The CBD or cannabis flower is a bud that will not get you high unless its mixed with THC but it will make you feel relaxed. It can take away your anxiety and depression, calm and ease your mind of the troubles that you are going through. It can also help minimize any pain that you are having. CBD in general is a great thing to have and to use. It works as an antidepressant, anti inflammatory, and it helps with certain mental illnesses, sickness and seizures.
The THC flower on the other hand gets you high. It plays with nerve cells and other things and can help the body also by reducing pain, nausea. THC gets released into your blood and swims straight to your brain and gives you an instant high within minutes.
THC can also make you feel funny and make you see things giving you hallucinations if you are not careful. You could also take bad trips so if this is your first time please take small amounts and go slow.