Is it normal to forget common words?
Sometimes I forget common words such as fork and have to make up words to describe them for example I once spent mins trying to remember the word for fork and had to ask for a four pronged stabbing thing (thankfully around relatives). About half and hour or so later I remembered the word fork and cutlery. Also I sometimes replace words e.g. I once said I am looking in my library when I was looking through my bag. This sort of thing happens at least once every few months.