How is endocytosis different from exocytosis in terms of cellular processes?

Endocytosis is the process by which cells take in substances from outside the cell by engulfing them in a vesicle, while exocytosis is the process by which cells release substances from inside the cell by fusing vesicles with the cell membrane. In summary, endocytosis brings substances into the cell, while exocytosis releases substances out of the cell.