* Simple meaning: The new teacher was much kinder to the students than the previous one.
* Comparing: Even though he was upset, he was kinder to her than he had any right to be.
* Figurative: The old house, though creaky and worn, had a kinder feel to it than the new one.
* More nuanced: The policy, though well-intentioned, was kinder to some groups than others.
* With a verb: Try to be kinder to yourself - you deserve it.
Remember, "kinder" is the comparative form of "kind." It's used when comparing the kindness of two things or people.