cashier vs throw under the bus

cashier

• To discard, put away. 

• To work as a cashier (at a till or receiving payment) 

• To annul. 

• One who works at a till or receives payments. 

• Person in charge of the cash of a business or bank. 

throw under the bus

• To discard or disown. 

• To betray or blame (something or someone), as a scapegoat or otherwise for personal gain.