Directly from "frons":
* Frontal: Relating to the forehead.
* Frontispiece: An illustration or decorative design at the beginning of a book.
From related Latin terms:
* Front: The forward part of something.
* Frontier: The edge or border of a settled area.
* Effrontery: Audacious or disrespectful behavior.
While not as common as other roots, understanding the meaning of "frons" can be helpful for recognizing and understanding these words.