Rugby originated in England and was originally known as Rugby Football, or Rugby for short.

Rugby from the United Kingdom to other countries, after continuous development and change, in many countries have produced their form of rugby.

In the United States, Canada, Australia, and other countries, rugby fields, equipment, rules, clothing, and even the number of people on the field, the size of the ball, and the method of the game are different but can be broadly divided into two categories: English rugby and American rugby.

American rugby and English rugby can be distinguished in the following ways:

1. Clothing:

English rugby players do not wear protective gear and adopt the clothing of soccer players.

American rugby players must wear prescribed clothing and protective gear, so it is also known as hard rugby.

In addition, American football is slightly smaller than English football, which makes it easier to pass the ball. Generally speaking, the English style is the No. 5 ball, while the American style is the No. 9 ball.

2. Time:

American rugby is a 60-minute game played in four 15-minute quarters.

English rugby is close to soccer, with a total of 80 minutes and 40 minutes for each half.

3. Number of personnel:

American football allows 11 players per team to be on the field at the same time; English football has 15 players per team playing on the field.

4. Direction of passing:

In American rugby, the ball stays forward most of the time (but not absolutely). The English game requires that a player can't pass the ball directly forward but must pass it to a teammate who is behind him; otherwise, it is considered offside.

5. Gameplay:

In English Rugby, the primary objective is to score tries (5 points) by grounding the ball in the opponent's in-goal area. There are also penalty goals (3 points) and conversions (2 points) awarded. 

In American Rugby, scoring involves tries (5 points), conversions (2 points), penalty kicks (3 points), and drop goals (3 points).

6. Scrums:

In English Rugby, scrums are used to restart play after certain infractions or when the ball goes out of play. In American Rugby, scrums are not used, and instead, a free kick or a lineout is used to restart play.

7. Lineouts:

In English Rugby, lineouts are used to restart play when the ball goes out of play. In American Rugby, lineouts function similarly but have some minor differences in their set-up.

8. Player protection: 

Both codes have similar player protection rules, but the enforcement and interpretation may vary. American Rugby may have some additional safety regulations due to their emphasis on player safety.

It's worth noting that there may be variations and additional scoring methods in different forms of rugby, so these are the general scoring methods for English and American rugby.