Enthalpy is well described above.

With Entropy, think of it as a measure of the “quality” of the energy—specifically, how useless has the energy become? High entropy = more useless. This is important because energy is not created or destroyed, but it does change and in those changes it becomes less useful.

For example, when you burn the gas in your car, you get ~35% efficiency—that is, only 35% turns into kinetic energy of the car. The other 65% isn’t lost…it is just dissipated in the atmosphere as heat and cannot easily be used any more. So its entropy has increased.