What is the meaning of ladder?
A device used for climbing.
A ladder is leaning against a wall if you were going to climb the ladder are you better off if there is no friction between the ladder and the wall or ladder and the floor?
The word ladder is NOT a proper noun; ladder is a common noun, a word for any ladder of any kind. A proper noun is the name of a person, place, thing, or a title; for example: Ladder Mountain, Adirondak State Park NY Ladder Ranch, Caballo, NM and Ladder Ranch, Savery, WY Vulcan Ladder Company, Island Lake, IL "Ladder 49", 2004 movie with Joaquin Phoenix and John Travolta