Amino acids help develop protein in our body and are divided into essential amino acids and non-essential amino acids. The BCAA are the three essential amino acids and have a different structure than the rest of the amino acids. BCAA is required by those with protein deficiency in supplements or food, and it contributes greatly to muscle growth and recovery. Most Amino acids are metabolized in the liver, whereas BCAA is metabolized in muscle.
Source: bcaa vs amino acid