What distinguishes essential amino acids from non-essential amino acids in the context of human nutrition?

Essential amino acids are synthesized by our body, whereas non-essential amino acids are obtained through diet.

Essential amino acids cannot be synthesized by our body and must be obtained through diet, whereas non-essential amino acids can be made by the body.

Essential amino acids are not required for our health, while non-essential amino acids are vital.

Non-essential amino acids are the most abundant proteins in the biosphere, while essential amino acids are not.