What is the difference between the word "feng" in Feng Shui and the word "qi" in metaphysics?

The word "wind" in geomantic omen may refer to blowing and hiding wind. I think the word "qi" in metaphysics is an invisible dark matter. British medical experts believe that the third reason for human spirit is that dark matter enters search. What British medical experts say about dark matter may be the same as what Chinese people say about negative (Yin Qi). I read it in a book before. A Russian scientist said that some substances have smoky substances invisible to the naked eye. I think this may also be called "qi" in metaphysics.