A tool used for turning screws; also known as 改锥 gǎi​zhuī or 螺丝刀 luó​sī​dāo

A tool used to open bottle caps or cans; also known as 开瓶器 kāi​píng​qì

A substance used to leaven dough, such as baking powder, baking soda, or a piece of fermented dough kept to start the next batch

(slang) Potential for future success; guts or courage

(measure word) A batch, lot, or group