a window consisting of several top-hinged sections arranged in a vertical series, operated by one or more control devices that swing the bottom edges of the sections outward, and designed especially to admit air while excluding rain.

A hopper window is a small window that opens downward and inward. It is commonly installed as a bathroom or basement window. The upward tilt of the window glass pane blocks open dirt and debris from getting into your home.

A bay window is a window space projecting outward from the main walls of a building and forming a bay in a room.

Bow windows are designed to create space by projecting beyond the exterior wall of a building, and to provide a wider view of the garden or street outside and typically combine four or more casement windows, which join together to form an arch

Storefront is defined as a non-residential, non-load-bearing assembly of commercial entrance systems and windows, usually spanning between the floor and the structure above, designed for high use and strength.Storefront is typically center glazed and is not self-draining.

A casement is a window that is attached to its frame by one or more hinges at the side. They are used singly or in pairs within a common frame, in which case they are hinged on the outside.

On single hung windows, the top sash is fixed in place and does not move, but the bottom sash is operable. On double hung windows, both sashes in the window frame are operable or move up and down.

Double hung has neither sash fixed

A picture window is a window containing one large sheet of glass, so that people have a good view of what is outside.