cao su 
rubber like: Gummi → →
der Gummi ☊ 
cao su ☊ 
☊ der Radiergummi ☊ cục tẩy ☊ ☊ der Kaugummi ☊ kẹo cao su ☊ ☊ Gummi ☊ 橡胶 ☊ xiàng jiāo Radiergummi ☊ 橡皮擦 ☊ xiàngpícā Kaugummi ☊ 口香糖 ☊ kǒuxiāngtáng The smell of burning rubber filled the air. ☊ burn ☊
He is always chewing gum. ☊ chew ☊
a pack of cigarettes/gum ☊ pack ☊
a ball made of rubber ☊ rubber ☊
a rubber tree ☊ rubber ☊
a jar with a rubber seal in the lid ☊ seal ☊
a walking stick with a rubber tip ☊ tip ☊
a skirt with an elasticated waist ☊ waist ☊