Put up and Throw together

Put up verb - To fix in an upright position.

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

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

Put up and throw together are semantically related in assemble topic. Sometimes you can use "Put up" instead a verb "Throw together", if it concerns topics such as erect, build, construct structure.