In case only one goal is scored in match, they will call it lone goal or a decider. If both teams were fighting in a balanced way, the team trailing by a goal, when scores a goal, they would call it an equalizer. The above information covers the single-goal scenario.
Before 1863. In English traditional football, the object of the game was typically to convey a ball into a specified area, or to touch a specific object (the area or object often being called the "goal") defended by the opposing team.