Straight cut : No fold. Usually sewn on all 4 sides, the top, or on left and right side only.
Endfold : Folded down on the left and right. Then the ends are sewn into a seam.
Centerfold: Folded in the middle and usually sewn into a seam. Used for sleeve and hem labels also.
Miter fold : The ends are folded under and up, creating a tab to be sewn into a seam.
Rolls : supply in rolls.
Below are some websites where we normally get our cool fonts ;)