Grinding
Part of speech: noun
Definition: The action of grinding or crushing into small particles. A form of dance in which the man and woman rub their bodies together.
Part of speech: verb
Definition: To reduce to smaller pieces by crushing with lateral motion.
Part of speech: adjective
Definition: Of or pertaining to the act or sound of grinding.
Example sentence: I am so stressed that my dentist told me I am grinding my teeth due to stress. So, every evening, I get shooting pain from my jaw to my head.
Attrition
Part of speech: noun
Definition: wearing or grinding down by frictionA gradual, natural reduction in membership or personnel, as through retirement, resignation, or deathThe loss of participants during an experiment
Example sentence: Some comments are within bounds, while some are not. But by whining about every little barb, candidates are trying to win the election through a war of staff resignation attrition, and Americans are losing the ability to distinguish between what is fair game and what is not.