What is offensive?

Answer 1

An offensive foul is a foul committed by the team with the ball. For an example: if someone with the ball runs into someone one the defensive team, the ref may call an offensive foul (also known as "charging"). How ever if the defensive player wants to draw those type of fouls they need to "plant their feet" meaning they cannot move their feet, they must be still.

But the rule is not perfect, sometimes they ref may call defensive foul (also known as "blocking"). Most blocks are called if the defensive player wouldn't set his feet, immediately jumps in their way, or stand in the "restriction area" (the arc shaped thing under the goal), those should be obvious blocks. NOTE:offensive fouls result in a turn over (other team gets ball).