# How would you differentiate between relative atomic mass and relative molar mass?

Well, look at the roots. It is fairly evident that relative atomic mass applies only to atoms. On the other hand, relative molar mass applies to anything that there can be a $\text{mol}$ of, meaning anything that you can count.
• $\text{Ne}$ has a relative atomic mass of $\text{20.1797 g/mol}$, and that is its relative molar mass as well.
• $\text{NaOH}$ has a relative molar mass of $\text{39.9959 g/mol}$, but has no relative atomic mass to speak of, for it is not an atom.