Turn around and U-turn

Turn around noun - Turning in an opposite direction or position.

U-turn and turn around are semantically related. in change of mind topic. In some cases you can use "U-turn" instead a noun "Turn around".

U-turn noun - A changing from one policy or point of view to virtually its exact opposite.

Turn around and U-turn are semantically related. Sometimes you can replace term "Turn around" with "U-turn", this terms are similar.