Phagocytosis: Phagocytosis is a type of engulfment performed by specialized cells called phagocytes. It involves the internalization of solid particles, such as bacteria or cell debris, by forming a phagosome.
Pinocytosis: Pinocytosis is another type of engulfment where cells take in fluid droplets or dissolved molecules from their surroundings by forming small vesicles called pinosomes.
Endocytosis: Endocytosis is a broad term that encompasses all forms of engulfment processes performed by cells, including both phagocytosis and pinocytosis. It refers to the uptake of extracellular materials into the cell through vesicle formation.