What is Climate Change?

The term "climate change" is sometimes used to refer to all forms of climatic inconsistency, but because the Earth's climate is never static, the term is more properly used to imply a significant change from one climatic condition to another. In some cases, climate change has been used synonymously with the term, global warming ; scientists however, tend to use the term in the wider sense to also include natural changes in climate.

Source:http://weather.ncbuy.com/glossary.html