In the final grid, there aren't any cells that contain two letters, as nine letters have been omitted so that the words fit. The omitted letters are then arranged to form the objects' name. But is the letter omitted from the checked cell included here, ie are there 8 letters or 9 in the objects' name?
If it's only 8. I'll stick with my assertion that the preamble is confusingly worded. However, if it's only 8, it's also easy to see what the name is, so there is that.