for opening
Instruments that remove lids, caps or corks from containers in order to provide access to their contents.
lever corkscrew 
Instrument with a screw and two wings that rise as the screw penetrates the cork; they then act as levers to open the bottle.
bottle opener 
Instrument used to remove caps from bottles.
can opener 
Tool used to open cans by cutting along the inside edge of the lid.
wine waiter corkscrew 
Instrument with a screw and a lever that open wine bottles by leverage, a blade for cutting the hood around the top, and a bottle opener.