What is the difference between alcohol and lactate fermentation?

Fermentation pathway is anaerobic process starts with glucose and splits it into pyruvic acid, then make 2 ATP and 2 NADH and convert pyruvic acid into lactic acid to make more NADH +. Lactic acid converts NADH to NADH+. Makes alcohol and CO2, why its bubbly- has the carbon dioxide. Alcohol made from the pyruvic acid. The difference is the end product made.