What: Unlike a cased window, these are used in the time of opening windows. Where: On the walls of the house where windows are. Why:The latch and overlap between the two windows allows to slide either one up or down to allow access to the outside world.
window - cased, fixed, or horizontal sliding.
What: Casement windows are hinged on the side and open outward to the left or right. Where: On walls on houses. Why: To provide a view to look outside of the house