Think over and Think twice

Think over verb - Reflect deeply on a subject.

Think twice and think over are semantically related in reconsider topic. In some cases you can use "Think twice" instead a verb "Think over", when it comes to topics like think about again.

Think twice verb - Consider and reconsider carefully.

Think over and think twice are semantically related in reconsider topic. Sometimes you can use "Think over" instead a verb phrase "Think twice", if it concerns topics such as think about again.