Difference between waxing, plucking, threading?

Waxing is cheaper and I've never had a problem with it growing back in thicker. Shaving makes is grow back in thicker, not waxing. Waxing is much quicker and easier. Threading requires the person to tie a single thread around a single hair and pull it out one at a time, which IMO takes waaaay too long. With waxing one quick pull and whoosh it's all gone.