Can saying the wrong word be a sign of dementia?

[PastTense]

Read the threads here about Senior Moments:

Had a senior moment today and it almost made me cry

I was taking the blades off the riding mower for sharpening and was wearing a pair of work gloves. Got the blades off and scraped a bunch of accumulated grass out of the underside of the deck. Took the blades over to my rigged up blade sharpening setup where I intended to sharpen them as usual with an electric angle grinder with a rubber pad and a sanding disk. I sat down with the grinder and thought “hey, best put the gloves back on for this.” I started looking for the gloves I had been wearin…

If what you describe is dementia a significant fraction of posters here also have it–which I don’t believe is true.