This is the commonest knot for tying two ropes together. It will not slip or jam if properly tied and is easy to untie.
THE FALSE REEF KNOT OR GRANNY.
If the ends are not properly crossed in making the reef knot the granny results, a bad and insecure knot.
THE SHEET BEND OR WEAVER'S KNOT
A knot much used by sailors in bending (tying) the sheet to the clew of the sail and in tying two rope ends together. Make a bight with one rope A, B, then pass the end C, of other rope up through and around the entire bight and bend it under its own standing-part.
THE BOWLINE