CSS does actually call it inheritance[0], but it's commonly mixed up with the cascade. Inheritance applies to certain properties, so that when they are not specified on an element, an element inherits the value of the parent.

The cascade[1] determines how rules from multiple sources are merged.

[0]: https://developer.mozilla.org/en-US/docs/Web/CSS/Inheritance [1]: https://developer.mozilla.org/en-US/docs/Web/CSS/Cascade