Pokémon (noun)- The game itself, but also what the creatures in the game are called. Pokémon plural form is Pokémon. Pocket+monster= Pokémon
Trainer (noun) – A person who catches and trains different kinds of Pokémon
Pokestop (noun) – Real world locations where players can capture Pokémon
Pokémon Gym (noun)– Locations where Pokémon Go players meet to battle Pokémon and try to take control of it for their Team
Team (noun)– Valor (red), Mystic (blue), and Instinct (yellow). Upon reaching Level 5, players choose a Team and try to win battles to control Gyms for their Teams.
Pokedex (noun)– Pokémon encyclopedia that has information on all of the Pokémon in the world
Pokeball (noun)– Where captured Pokémon are stored