Are changing up plans with someone equivalent to breaking your word/promise to them?

Like you’re not dropping the plans altogether, you just may change the day or time of the plans because something came up, you’re sick etc vs when you break your word or promise, you’ll drop the plans altogether and not even try to figure out something to make sure the plans still happen even if that means you have to switch up things within the plan.

Are changing up plans with someone equivalent to breaking your word/promise to them?
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