Here are some examples of words that use this root:
* Silvan: relating to or characteristic of forests.
* Silviculture: the science and practice of controlling the establishment, growth, composition, health, and quality of forests and woodlands to meet diverse needs and values.
* Sylvan: a word that means "forest" or "woodland" and is often used to describe something that is peaceful and secluded.
It's important to note that "sil" is not a very common root word in English. However, it is still used in a few words that relate to forests and woodland areas.