Wikipedia Describes Rugby Union As: 

Rugby union is a competitive outdoor contact sport, played with an oval ball, by two teams of 15 players. It is one of the two main codes of rugby football, the other being rugby league. There is also a seven-a-side variant named rugby sevens, which is played under modified laws. Rugby union is most often referred to as simply rugby. It may also be known by the slang or colloquial term rugger, a corruption of the word rugby, although this term has declined in use.

Helpful Videos

• Rugby 101