As used in this chapter:
(a) “Junk” means used or salvaged iron, brass, lead, copper and other base metal and their compounds or combinations, used or salvaged rope, bags, paper, glass, rubber and similar articles or property, and used motor vehicles or parts, which are used, owned or possessed for the purpose of wrecking or salvaging parts therefrom.
(b) “Junk collector” means every person who does not maintain or conduct a junk shop or yard, but who, in his or her own behalf or as an employee or agent of any junk dealer in the city, buys, sells, exchanges, collects and receives or handles junk.
(c) “Junk dealer” means every person who buys, sells, exchanges, collects, receives, handles or stores junk and who maintains or conducts a junk yard or junk shop in the city.
(d) “Junk yard” or “junk shop” means any place at which a junk dealer buys, exchanges, collects, receives, stores, accumulates, sells or otherwise handles junk. It includes any business, place or area wherein wrecked motor vehicles, the parts thereof or parts taken therefrom are stored, kept or placed for more than 60 days.