Specific heat capacity is a measure of how much heat it takes to raise the temperature of something by 1 degree Celsius.
Some substances transmit heat better than others and so heat up faster.
A copper pipe in a flame for example, will transmit the heat the flame gives it to other atoms in the pipe faster than the same amount of water ever could. There are several reasons for this. Firstly, atoms in a solid are more tightly packed than in a liquid so heat can transfer from one atom to another faster. Also atoms in metals are in very neat rows while atoms in water whiz around all over the place. This means a lot of the energy water molecules have is wasted in moving around.