Animacy is a fancy word that describes how alive or active something is. Things that are alive, or have a lot of action, are considered more animate, while things that are inactive or not alive are considered less animate.
For example, a dog is very animate because it moves around a lot, barks, and plays with toys. A toy, on the other hand, is less animate because it doesn't move or do anything on its own.
Animacy can also help us understand language. Some languages use different words or grammar depending on whether the thing they are talking about is animate or not. For example, in some languages, you might use a different pronoun (like "he" or "she") for a person or animal than you would for an object. This is because people and animals are more animate than objects.
So, animacy is all about how active or alive something is, and can help us understand both the world around us and the language we use to talk about it!