A “Knot” is kind of like a bulb type thing in the Seme’s penis that swells when they are aroused and keeps them locked inside their Uke during sex to increase chances of getting the Uke pregnant, this is called “Knotting”.
A nest is basically a place an omega feels comfortable in for heats. For the most part, it's blankets and pillows that they use to create a comfortable area to spend their heats. They tend to bring things that smell good to them as well to make them feel more protected as well. List of nesting mangas: https://www.anime-planet.com/users/AnnaSartin/lists/omegaverse-nesting-scenes-619399
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
Alpha knot