different between juking vs grinding

English

juking

From Middle English gryndynge, equivalent to grind +? -ing.

grinding

grinding (plural grindings)

The action of grinding together or crushing into small particles.
Ominous creakings and grindings came from the innards of the machine.
(dance) A form of dance in which two people rub their bodies together.
(gaming) Repeatedly performing the same quest or similar in-game activity in order to amass points or wealth.

grinding (not comparable)

Of or pertaining to the act or sound of grinding.
The meeting came to a grinding halt when the two sides could not agree.
Hard and tedious.
a week filled with grinding toil

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