Japanese Word Images for "Ninja"
A few hundred years ago we had some specially skilled peoples In Japan. We called them "Ninja". Mainly they worked for feudal lords as spies or assassins by using their special skills.
Anyway we use this kanji word "忍者(にんじゃ-ninja)" for "Ninja". And we use the words "忍術(にんじゅつ-ninjutsu)", "忍法(にんぽう-ninpou)" or "忍びの術(しのびのじゅつ-shinobinojutsu)" for their special skills (ninja arts). And the area where these ninjas were grown up, we call "忍びの里(しのびのさと-shinobinosato)".