"Wear and tear is" or "wear and tear are" [closed]

I just wrote the following sentence:

Normal wear and tear is not considered damage to the property.

MS Word suggested that I change the sentence to:

Normal wear and tear are not considered damage to the property.

I think that Word understands wear and tear to be a list of things, but I think wear and tear is considered as one "thing". Which one is actually correct, and why? Or might both actually work?

Solution 1:

According to Collins Dictionary, "wear and tear" is an uncountable noun, which means it can't take a plural. In fact, the "learner's definition" even uses the word "is":

Wear and tear is the damage or change that is caused to something when it is being used normally.