Sign up and Take bull by the horns

Sign up verb - Engage by written agreement.

Take bull by the horns and sign up are semantically related in offer to do something topic. In some cases you can use "Take bull by the horns" instead a verb "Sign up".

Sign up and take bull by the horns are semantically related in offer to do something topic. You can use "Sign up" instead a verb phrase "Take bull by the horns".