Shading (noun)

1. The use of shading to represent the effects of light and shadow in a picture or diagram.
2. The slight adjustment of a note from its correct pitch, typically to express feeling in performance.
3. The amount or degree of shade in a particular area.
4. The use of shadows or screens to protect something from direct sunlight.

Origin:

Late middle english: from shade + -ing1.

Examples:

1. The artist's skillful shading brings the portrait to life.
2. The singer's shading of the melody was very effective in conveying the emotions of the song.
3. The shading in the garden provided a much-needed respite from the hot sun.
4. Shading is an important factor to consider when designing a greenhouse.
5. The shading devices protect the building's interior from unwanted solar heat gain.