\tEndocytosis refers to taking in of matter into a living cell by the forming of a vesicle by the cell membrane. Phagocytosis: Phagocytosis refers to the taking in of large solid matter into the cell by forming phagosomes.\xa0\tEndocytosis: Endocytosis is composed of three categories: phagocytosis, pinocytosis and receptor-mediated endocytosis. Phagocytosis is a category of endocytosis.\tMaterial taken up Endocytosis: During endocytosis, both macromolecules and particles are taken into the cell. Phagocytosis: During phagocytosis, only particles are taken into the cell.\t“Phagocytosis” is under “endocytosis.” Endocytosis has four subcategories which include: phagocytosis, clathrin-mediated endocytosis, macropinocytosis, and caveolae. “Phagocytosis” came from the Greek word “phagein” meaning “to devour,” “kytos” meaning “cell” and “-osis” meaning “process” which is totally defined as “the process of engulfing solid particles.” “Endocytosis” came from the word “endo” which means “within,” “cyt” meaning “cell,” and “-osis” meaning “process.”\tPhagocytosis involves the engulfing of solid particles which only can be done through oxygen or non-oxygen dependent processes while endocytosis involves either solid or liquid particles.