Type sizes of LaTeX

Text in a LaTeX document can be displayed in 9 sizes:

\documentclass[a4paper]{article}
\begin{document}

\tiny{tiny}
\scriptsize{scriptsize}
\footnotesize{footnotesize}
\small{small}
\normalsize{normalsize}
\large{large}
\Large{Large}
\LARGE{LARGE}
\huge{huge}
\Huge{Huge}

\end{document}