Pow and Upper hand

Pow noun - A person who surrenders to (or is taken by) the enemy in time of war.

Upper hand and pow are semantically related. in power topic. In some cases you can use "Upper hand" instead a noun "Pow", when it comes to topics like authority.

Upper hand noun - The more favorable condition or position in a competition.

Pow and upper hand are semantically related. Sometimes you can use "Pow" instead a noun phrase "Upper hand".