Any reason for insisting on TikZ? And in that case, do you want an automatically generated cloud based on a text, or do you just want to manually position individual words? By the way, see also Showcase TeX Typography for TUG's Calendar (though this uses R to generate the TikZ code).
– Torbjørn T.May 22 '16 at 18:12
\documentclass{standalone} \usepackage{tikz} \begin{document} \begin{tikzpicture}[every node/.style={font=\Huge\bfseries}] \node (a) at (0,0) {Word}; \node [blue,anchor=north,rotate=90] (b) at (a.east) {Awesome}; \node [red,scale=2] at (-0.5,1) {Cool}; \end{tikzpicture} \end{document}– Torbjørn T. May 22 '16 at 19:42