What in the blue f*ck are they classified as whats the effect on metabolism?

For instance. This new low carb beer has 2.4g of carbs, 1g protein and its 98 cals.

Now 2.4g of carbs= 9.6 calories
1g protein= 4 calories

Leaving 84.4 calories from alcohol.

Now could alcohol be considered a carb or is it classified totaly diff. with a completely diff. effect on metabolism?