1The ship's speed was measured in knots, with the captain aiming to maintain a steady 20 knots in order to reach the harbor on time.
2The mathematician struggled to find a solution to the complex knot of equations, which had been puzzling her for weeks.
3The novel's plot was a knot of twists and turns, keeping the reader guessing until the very end.
4The sailor expertly tied a knot in the rope, securing the sail in place despite the strong winds.
5The economist's model revealed a knot of interconnected factors contributing to the economic downturn, which would require careful analysis to untangle.