variation

Variation means when things are different from each other. For example, let's say we have a box of crayons. Some crayons are red, some are blue, and some are yellow. The different colors of the crayons are a variation.

Variation can also mean when something changes or is different from how it was before. For example, if you have a plant and you give it different amounts of water, it might grow taller or shorter. That's a variation in how the plant grows.