Endosmosis is the movement of a solvent (usually water) across a semipermeable membrane from a region outside a cell where there is high solvent, low solute, into a cell where this is low solvent, high solute.  Endosmosis is a type of osmosis.

Exosmosis is the movement of a solvent (usually water) across a semipermeable membrane from inside a cell where there is high solvent, low solute to outside a cell where this is low solvent, high solute. Exosmosis is also a type of osmosis.

Osmosis is the passive diffusion of water through a semipermeable membrane along a concentration gradient from where there is a high concentration of water to where there is a low concentration of water.

plasmolysis is the shrinkage of a cell due to the persisting movement of the water molecules out of the cell.

Yaa these all are related to diffusion.....

Endosmosis:
Endosmosis refers to the movement of solvent molecules (usually water) from the outer environment into a cell or a membrane-bound structure. It occurs when the solute concentration is higher outside the cell or structure than inside.

Exosmosis:
Exosmosis is the opposite of endosmosis. It is the movement of solvent molecules (usually water) from inside a cell or structure to the outer environment. Exosmosis occurs when the solute concentration is higher inside the cell or structure.

Osmosis:
Osmosis is the process of diffusion of water across a selectively permeable membrane. It involves the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration, in order to equalize the concentration on both sides of the membrane.

Plasmolysis:
Plasmolysis is a specific case of osmosis that occurs in plant cells. It is the process in which water is lost from the cell due to a hypertonic external environment. As a result, the cell membrane shrinks away from the cell wall, leading to the collapse of the cytoplasm.

Relationship to Diffusion of Water:
- Endosmosis and exosmosis are specific types of osmosis, which is the diffusion of water across a membrane. They involve the movement of water molecules due to differences in solute concentration.
- Osmosis is the broader term that encompasses both endosmosis and exosmosis. It describes the movement of water across a selectively permeable membrane to balance the solute concentration.
- Plasmolysis is a consequence of osmosis in plant cells. When plant cells lose water through osmosis, they undergo plasmolysis, resulting in the shrinking of the cell membrane away from the cell wall.

In summary, endosmosis and exosmosis are specific types of osmosis that describe the movement of water into and out of cells, respectively. Osmosis is the general process of water diffusion across a membrane, while plasmolysis is a specific result of osmosis in plant cells. All these processes are related to the diffusion of water and play important roles in maintaining the balance of solute concentration inside and outside cells.