Okay so impulsive thoughts are like a random action you just want to do, for example scream in the middle of class, or throw a plate on the floor, or even just buy a random thing, but the thing with impulsive thoughts is it’s something you *want* to do whether it be because it’s funny or you want to see what will happen. Intrusive thoughts are unwanted/uncontrolled thoughts that someone might have like “I want to kill this person I love” or “I want to harm myself or others” (other things other than that but bottom line they are typically distressing), they typically occur at random but the thing with intrusive thoughts is that you *don’t want* to act on them and they are thought to occur from the fear that you might do this thing that you don’t want to do, this can cause severe anxiety and self isolation in those who get them. Typically intrusive thoughts are associated with those with OCD and other disorders, hope this helps