橡胶

rubber(noun)

(also adjective) (of) a strong elastic substance made from the juice of certain plants (especially the rubber tree ), or an artificial substitute for this

橡皮

rubber(noun)

(also eˈraser ) a piece of rubber used to rub out pencil etc marks

（俚）避孕套

rubber(noun)

(slang) a condom.

橡胶带子

rubber(noun)

a rubber band.