Reward
noun
A kindness prize is one that someone gives you out of kindness. Perhaps you've done something nice, which is why they are giving you a reward.
Note: this is an older word, so you'll probably only see it in history books, but it's important to know anyway!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
あのベーコン泥棒を引っ捕えた者には恩賞を与えよう。
I'll give a reward to the person who can catch the bacon thief.
功労に準じて恩賞が付与されるということを覚えておいてくださいね。
Please keep in mind that rewards will be assigned proportionate to your work.
後醍醐天皇による建武の新政は、公家にはたくさん恩賞が出たのに武士には少なかったため、武士からの評判が悪かった。
Emperor Godaigo's Kenmu Restoration had a bad reputation from samurai because court nobles got far more rewards than samurai did.