Global warming is usually the same thing as climate change, see this word for a longer explanation.
The one difference we want to highlight is that the two terms are used by different people. People who refuse the scientific evidence about climate change (“climate skeptics/deniers”) more often use the term global warming than others. People who work to combat climate change, or people who are concerned about climate change more often use the term climate change. Source: “Climate Change Sentiment on Twitter: An Unsolicited Public Opinion Poll.” by Emily M. Cody, Andrew J. Reagan, Lewis Mitchell, Peter Sheridan Dodds, and Christopher M. Danforth
PLoS ONE 10(8): e0136092; 2015.