Cardoid and hypercardoid are two different pickup patterns.
Cardoid picks up most of its sound from the front and sides, while hypercardoid picks up less from the sides and more from the back; I think, or mabey its vice versa. I can't remember, i had a late night and need sleep.
In response to your other question you should just experiment with different angles and positions (the mic that is).
omnipotent