I can crunch, but I cannot stand windows. People use me to make doctors disappear .

I exist as a song and a plant, but I am not just something pretty but a snack too. You might find me in a Vincent Van Gogh painting.

I am used to gain entry, save a spot, or reprimand, but I am not used to reimburse if sales are final once in hand. You can find me in airports, on windshields, in Disneyland.

I have a great big door that doesn't open left or right, but I do not have a lock, while i always have a light. I am often seen in households, turning raw things to delights.

An unyielding guide, I might lead your gaze. Your enemies injured, mark their last days. Im straightforward, and quick to the point. I'll cease your adventure, one graze of your joint.