* Simple: The guardian of the ancient temple held the key to its secrets.
* Descriptive: The children's guardian was a kind and patient woman who always had their best interests at heart.
* Figurative: The mountains stood as guardians of the valley, protecting it from the harsh winds.
* Legal: After their parents passed away, the children were placed in the care of a guardian appointed by the court.
* With a noun: The guardian angel watched over the traveler, guiding them safely home.
You can also use "guardian" as a verb:
* Example: The old oak tree guarded the entrance to the forest.