Slip knot, running noose, or halter knot.
Fixed loop in middle of a cord.
Reef knot or square knot: never slips or jambs: easily loosed.
False reef or granny: always bad.
Bowline: a noose that neither jambs nor slips.
The fisherman's knot. It never slips; is easily opened by pulling the two short ends.
Weaver's knot or sheet bend, for joining small cords.
Binder knot, for joining heavy cord, etc.
Picket rope with a half-granny and a half-hitch.
Carrick bend, for joining large ropes.
Timber hitch: cannot slip or jamb; easily loosed.
Becket hitch, for joining a cord and a rope.
Wax-end lashing; hidden end.