Gasket: material used to watertight seal between sashes and frame.

Glazing: The process of sealing the glass to the sash

Glazing Block: A small hard rubber block placed around the edges of the glass unit in a window sash to position the glass and prevent it from shifting.

Glazing bead. A molding or stop around the inside of a window frame to hold the glass in place

Glazing stop: The part of the sash or door panel which holds the glass in place.

Grids:Decorative horizontal or vertical bars installed between the glass panes to create an attractive way to add distinction to any window.

Grilles: Window Grilles are decorative pattern on a window or door consisting of horizontal and/or vertical bars that divide the larger sheet of glass into smaller panes.

Greenhouse window: else called garden window A three-dimensional window that project outward from the existing structure to create a shelf or set  of shelves usually has glazing on all sides except the bottom.