• 蓄たくわえる — to store up; to save
• 蓄積ちくせき — accumulation; buildup
• 貯蓄ちょちく — savings; putting money aside
• 蓄財ちくざい — amassing wealth
• 蓄電池ちくでんち — storage battery; accumulator
• 蓄音機ちくおんき — gramophone; phonograph (historical)

蓄 places the grass crown 艹 over the phonetic 畜. Think of storing fodder for livestock — piling up hay season after season. From that image comes “to store,” “to amass,” and “to build up over time.”

Picture 貯蓄（ちょちく）: each coin is a straw of hay. One piece doesn’t look like much, but steady saving becomes a stack — then a barn. That’s 蓄: small, repeated actions that turn into real reserves.