Well I think of reuse as.. use it again after you've used it once. As opposed to, keep using it the first time and make its initial use last longer.

Perhaps we should add, "Reconsider" as in, "Reconsider purchasing the item, when it's not needed, or a better alternative exists".

Is there a difference between "reconsider" and "reduce"?

"Reduce" would imply "Do less of" while "reconsider" would imply "Maybe something else fits better". Instead of reducing your usage of plastic bags, reconsider if maybe paper bags works as well?

Which would reduce your use of plastic bags.

There would be a difference between reducing your use of motor vehicles and reconsidering using them at all if our lifestyle allows us to use an alternative, like an ebike.

Thanks for the downvotes for simply openly suggesting something fairly benign. A real vibrant and healthy community we have here.