Gentlemen, maybe I can clarify.
Bolts are fasteners that may or may not have a head suitable for use with a wrench or driving tool. Think of carriage bolts or coach bolts. Bolts need nuts to become fasteners. Bolts are tightened by threading on nuts. Bolts are not threaded into blind holes.
Screws are fasteners with heads that will require a wrench or driving tool. Hex head, socket head, slot, Philips, Robertsons, etc. Screws do not generally need nuts to become fasteners. Screws are tightened from the head end. Screws are, most often, threaded into holes.
Anyhoo, call 'em what you like, or what you're used to, it's all good.