Matcha is a finely ground powder of green tea specially processed from shade-grown tea leaves. Shade growing gives matcha its characteristic bright green color and strong umami flavor. Matcha is typically consumed suspended in hot water.

In science fiction, mecha or mechs are giant robots or machines, typically depicted as piloted, humanoid walking vehicles. The term was first used in Japanese after shortening the English loanword 'mechanism' or 'mechanical' , but the meaning in Japanese is more inclusive, and 'robot' or 'giant robot' is the narrower term.