ELI5: Explain Like I'm 5

homomorphism

Homomorphism is like when you take something and make a copy of it. It's like when you make a copy of a picture, or a movie, or even a song. A homomorphism takes a thing and makes an exact copy of it. That copy could be a different shape, color, size, or even a completely different type of thing. For example, you could take a picture of a car and turn it into a 3D model of the same car. That's a homomorphism because it's a copy of the original object, but it looks different.