Physicalism is the philosophical view that the only things that exist are physical objects. This means that all of the things that we think of as mental, like thoughts, feelings, and beliefs, are actually just physical things.
To endow something is to give it a gift. Sometimes the gift is money, but it can also be something more valuable, like a gift card.
Electrodynamics is the branch of physics that deals with the interaction between electricity and matter. It is a very important field, because it helps us to understand how things work.
A grudge is a resentment or anger that you have towards someone. Sometimes a grudge can last for a very long time.
Spaceships are vehicles that are used to travel through space. They are usually made out of metal and plastic, and they are powered by engines.
Hoarding is a condition where people accumulate too much stuff. They might hoard food, possessions, or even emotions.