The Chapel of Notre-Dame du Pilier is not, properly speaking, a chapel, but part of the ambulatory of the choir in which the statue of the Vierge Noire du Pilier or the Vierge aux Miracles is set.
Notre-Dame du Pilier was solemnly crowned, in the name of Pius IX.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "pilier" in a variety of sentences. We hope that you will now be able to make sentences using this word.