磁石
じしゃく · jishaku · JLPT N2 · noun
magnet
🧲 磁石 = 磁 (magnet force) + 石 (stone): a magnetic stone, like lodestone
じしゃく sounds like 'ji-sha-ku', close to 'jisha' (that's a 'jisha' = 'stone-shaker' idea)? Keep it simple: 磁 means magnetism and 石 means stone, the naturally magnetic rock called lodestone.