An instance of kind behavior: I will always remember your many kindnesses to me. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "kindness" in a sentence
"Stewart wound up the bit by saying everyone should take a lesson in kindness from the Sanchez episode."
"But papa was stern for once, and vowed that I had been served quite right, declared that I should not be removed from school, and sent old Swishtail a brace of pheasants for what he called his kindness to me."
"Usually he prefaces his turn with a plaintive speech in which he refers to the kindness and fair play shown him by his Australian audiences."