What is considered a "Window"

So @Luke, when you have your estimate videos, I know for a double hung window that opens up and down you count as one window. Do you charge a window that opens side to side as one window as well?

Another question, do you guys quote small businesses (not a store front, like a standalone dental office) the same as you would quote a store front? A lot of dental offices and medical offices around my parts are more like houses, I don’t charge what I do for residential, but wanted your input.