1. Casement
Definition: A window unit hinged along the left or right side. The opposite side to the hinge, opens away from the house (like a door).
(http://www.stegbar.com.au/services/resource_centre/general_information/glossary/)
2. Double-Hung
Definition: Two vertically sliding sashes which by-pass each other in a single frame.
(http://www.stegbar.com.au/services/resource_centre/general_information/glossary/)
Cottage Style double-hungs are windows in which the upper sash is shorter than the lower sash. (www.roofingstorellc.com/consumer-education/glossary-roofing-windows.html)
3. Divided Light
Definition:
True divided light sashes have small panes of glass separated by muntins. Visbeen Associates typically use simulated divided light windows, where there is one pane of glass with muntins affixed to the glass to create the illusion of a division.
(http://www.greenbuildingadvisor.com/glossary/)
4. Mullions
Definition: a nonstructural vertical strip between the casements or panes of a window (or the panels of a screen). (http://wordnetweb.princeton.edu/perl/webwn)
5. Muntin
Definition: A vertical or horizontal divider between individual panes of glass within a window.(http://www.almanac.com/content/homeowners-glossary)
6. Picture
Definition: A large non-oerating window designed for maximum view without obstruction. (http://stegbar.com/au/services/resource_centre/general_information/glossary/)