Cook up and Throw together

Cook up verb - To create or think of by clever use of the imagination.

Throw together and cook up are semantically related In some cases you can use "Throw together" instead a verb "Cook up".

Throw together verb - Produce shoddily, without much attention to detail.

Cook up and throw together are semantically related in invent topic. Sometimes you can use "Cook up" instead a verb "Throw together", if it concerns topics such as conceive, formulate, assemble, adjust.