* "Ken is a great guy, always willing to lend a hand." (This uses "Ken" as a name.)
* "I have a good understanding of the situation, but I need to expand my ken on the matter." (This uses "ken" to mean "knowledge" or "understanding.")
* "The view from the mountaintop was breathtaking, extending as far as the eye could ken." (This uses "ken" as a verb meaning "to see" or "to perceive.")