Lightning is a giant spark of electricity in the atmosphere between clouds, the air, or the ground. Lightning can occur between opposite charges within the thunderstorm cloud (intra-cloud lightning) or between opposite charges in the cloud and on the ground (cloud-to-ground lightning). (Source: NSSL)
The National Hockey League is a professional ice hockey league in North America comprising 32 teams—25 in the United States and 7 in Canada. It is considered to be the premier professional ice hockey league in the world, and is one of the major professional sports leagues in the United States and Canada.