Protein targeting is an essential process in the biological cells that involves directing proteins to their correct locations. There are various synonyms for protein targeting, including protein localization, protein sorting, and protein trafficking. Protein localization refers to the process of directing proteins to a particular organelle or site in the cell. Protein sorting entails the separation of proteins for specific transport to the various cell locations. On the other hand, protein trafficking involves the movement of proteins within the cell and between different cells in the body. These processes are critical in maintaining the homeostasis of the cell and ensuring the proper functioning of various organs in the body.