What’s the difference between how officials communicate in badminton and table tennis

Difference is below.

Explanation:

In badminton, the officials strictly make use of hand signals such as raising of the right hand straight above the head, lifting of the palm horizontally in the downward direction e.t.c

Whereas in tennis, the officials communicate using verbal means but in some cases they make where the noise level is so much that the verbal means wouldn't be appropriate, they make use of approved hand signals.

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i believe it is the last one. im sorry if im wrong!