Take the bull by the horns and Take up

Take the bull by the horns verb - Face a difficulty and grapple with it without avoiding it.

Take up and take the bull by the horns are semantically related. In some cases you can use "Take up" instead a verb phrase "Take the bull by the horns".

Take up verb - To move from a lower to a higher place or position.

Take the bull by the horns and take up are semantically related. Sometimes you can use "Take the bull by the horns" instead a verb "Take up".