Here's a breakdown:

* Element: A pure substance that cannot be broken down into simpler substances by chemical means. Examples include gold (Au), oxygen (O), and carbon (C).

* Compound: A pure substance formed by the chemical combination of two or more elements in a fixed ratio. Examples include water (H₂O), salt (NaCl), and sugar (C₁₂H₂₂O₁₁).

Let me know if you have any other questions!