When writing poetry or prose, it is enhanced by the use of specific detail. So instead of a 'water in a glass' you can say 'the pint glass was half full of brackish water' and it makes a much more vivid image in the reader's mind. It helps enhance the concreteness of the image. It also helps you show instead of telling.
However, it is possible to get too lost in the detail. It's a balance, as you can end up describing too much. You have to select which details are relevant.