In Chapter 11 of The Giver, what words or concepts did Jonas experience?
The old man gives Jonas the memory of snow, sledding, and the feeling of snow hitting you in the face. Jonas experiences that adrenaline rush of a sled ride as well. Jonas also experiences cold for the first time. After a while, Jonas is given the memory of sun, warmth and sunburn as a way to experience pain. The sunburn is not a bad one, so the pain is not "horrible", but just enough to know what it feels like to be in pain.
Since the community has gone to Sameness, there is no "fun" or thrill-seeking. One day is just like the next. The weather is all the same, everyone sees in black and white. Jonas is given the memory of a rainbow so that he can see all of the colors. (in a later chapter)
After his work with "the old man" Jonas notices that the old man looks tired and a little drained. Once the memories are passed from him to Jonas, The Giver has a very vague recollection of them.
In this chapter, Jonas's first visit to the Giver's home provides him with his first memory transmission: sledding on a snowy hill. For the first time, he sees snow and feels the exhilaration of sledding. He also feels sunshine, and then later, sunburn, to understand the concept of pain. We learn in this chapter that the community has gone to Sameness, which means that they don't have unusual weather or the fun activities associated with snow. So Jonas's experiences are entirely unique to him, as he is accustomed to total climate control in his environment.