I assume that glass is considered to be a ceramic, and that glass melts. But is it a property of all ceramics that they melt? I would have thought that your typ

I assume that glass is considered to be a ceramic, and that glass melts. But is it a property of all ceramics that they melt? I would have thought that your typical coffee mug would burn, rather than melt, given high enough temperature. Or is part of the point here that this new ceramic belongs to the subset of ceramics that do in fact melt?