矛盾
むじゅん · mujun · JLPT N2 · noun
contradiction
🛡️🗡️ 矛盾 = spear + shield: a seller claimed his spear pierces any shield and his shield stops any spear
From an old Chinese tale about a merchant who sold a spear that could pierce any shield and a shield that could stop any spear. Asked what happens when they meet, he had no answer. Two claims that cannot both be true.