Build up and Warming up

Build up verb - To become greater in extent, volume, amount, or number.

Warming up and build up are semantically related In some cases you can replace term "Warming up" with "Build up", this phrasal verbs are similar.

Build up and warming up are semantically related in adapt topic. Sometimes you can use "Build up" instead a verb "Warming up", if it concerns topics such as repeat action to improve, make or get ready.