Step-by-step explanation:
An element is defined as a substance which contains atoms of only one or similar type.
For example, a block of cesium metal will only contain atoms of cesium.
This means that basically a substance is made up of atoms or element.
Basically, an element is the basic building block of a substance or matter.
Therefore, we can conclude that one way to describe an element is that they are the basic building blocks of matter.