n. 25B6; noun
the switch on top of the telephone : BUTTON, lever, control, dial.
a switch from direct to indirect taxation : CHANGE, move, shift, transition, transformation; reversal, turnaround, U-turn, changeover, transfer, conversion; substitution, exchange.
a switch of willow : BRANCH, twig, stick, rod.
25B6; verb
he switched sides : CHANGE, shift; reverse; Brit. informal chop and change.
he managed to switch envelopes : EXCHANGE, swap, interchange, trade, substitute, replace, rotate.
25A0; switch something on TURN ON, put on, activate, start, set going, set in motion, operate, initiate, actuate, initialize, energize.
25A0; switch something off TURN OFF, shut off, stop, cut, halt, deactivate.