A move is fire-type because it deals with flames; a move is water-type because it deals with water; a move is grass, psychic or ice type because it deals with plants, ESP/telekinesis/precog or cold, etc.
But some types I don't get when it comes to moves. What does a dragon type move mean? What does a ghost type move mean? A bug or fairy type move?
Can someone soothe my autism with an explanation please