Again, just the basics. You can find more in-depth definitions as well, but this will give you enough clarity to read your typical Wattpad or AO3 story without needing a dictionary every five minutes.
*the definitions below stem from wolf behavior, but not all omegaverse fics include wolves, and still, some have other kinds of were-animals. If you want to use a transformation other than wolves, it might be fun to do some research on your animal of choice.
Scents: In omega versus, people have scents that allow them to lay their claim on things, places, and other people. Families, packs, and mates will scent each other to kindship between each other. In many fics, alphas will scent an emotional object for their beta/omega as a way to always be close. These pheromone glands can be found behind ears, on necks, wrists, feet, hands, and genitalia.
Nests: the instinct or urge to prepare a comfortable/safe area for newborn pups (babies) or ahead of a mating period/season. I have also read fics where nests were just used as safe spaces, regardless of upcoming pregnancies, etc.. Stereotypically, omegas do the nesting. They may fill their nest with sentimental/comforting items, bedding, scented objects from loved ones, etc..
Bonds: Typically written as an alpha bite to the neck in a visible area, so when a scar forms the rest of the "pack" knows that said person is now off the market. Can also signify a lifelong mental/emotional bond. Omegas are easiest to bond when they are in heat, but this is not always observed.
Mates: The term for people in a romantic relationship. Commonly used to signify soulmates and couples who have been bonded, but this is not always observed.
*a common trope of Omegaverse writing is that two people find out that they are mates, but they aren't into each other/completely against the idea.
Ruts: Commonly observed in alphas. A period of time (usually 4-8 days) in which a person will feel an overwhelming desire to breed and dominate. Can be brought on by the scent of another person in heat, or linked to a monthly cycle. Can be dangerous, as the alpha may become physically/sexually violent towards those around them. If mated, the alpha may become overbearingly protective towards their mate. Symptoms can be eliminated by copulation, bonding, and knotting.
Heats: Most often observed in omegas, heat is a period of time (usually anywhere between 3-8 days) in which fertility is the highest. This is accompanied by elevated arousal, temperature, pheromone potency, and lack of appetite. Symptoms can be eliminated/decreased by copulation, skin-to-skin contact, rest, and in some stories, medication.
Knots: The expansion at the base of an alpha's genitalia that allows them to be connected to their partner during copulation so that their sperm can stay locked in, increasing the chance of pregnancy.
Slick: Self-lubrication commonly made by omegas during heat. The amount that is released depends upon the author.
