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No, it's that "climate change" is broader. If we are talking exclusively about temperatures during the present era, then "global warming" is still a useful term.Yes.
Climate change is more accurate.
Yes, it has. That fact alone, however, does not disprove AGW.And yes, climate has always changed.
Denier says what now?But no, no one has explained why rising CO2 during the industrial age could cause warming for hundreds of years prior, or can cause decades long cooling during the industrial age.
Global temperatures were cooling, not warming, in the centuries before the Industrial Era (which starts in 1750). We don't know exactly what caused or ended the LIA, and it's a safe bet that some of its end was due to natural causes. However, there is no scientific reason to doubt that human activity quickly overwhelmed any natural impacts by, say, 1850; and that most of the warming since then is due to human activities.
And no, there weren't "decades of cooling" during the Industrial Era. The trend is up, and in tandem with CO2 levels (along with other GHGs, not included in the chart).