Difference between adsorption and absorption

Difference between adsorption and absorption:

Adsorption: 

• Chemical or physical adhesion of molecules or substances to the surface.
• It implies adhesion when liquid or gas stick to the surface of adsorbent with the preservation of their physical state.
• It is a surface phenomenon
• It is exothermic process.
• It occur at low Temperature ,at high T desorption occurs.
• Surface(adsorbent) is solid state  mostly on which the molecules attach.
• There is a relation ship between pores at the surface of adsorbent and size of adsorbate.
• It can be temporary or permanent .
• Mono and multilayer can form.
• It is not uniform always proceeding toward equilibrium
• Its rate  is not same,decreasing till attaining equilibrium.
• e.g Adhesion (Adsorption) of leach or mosquito to the human body surface. 
• Molecules (adsorbate) can be separated easily because of surface adhesion and lose attachment.

 Absorption:

• Distribution of molecules or substances(liquid or gas) through out the bulk.
• It implies assimilation and occurs through the conversion of gas into liquid,liquid into solid hence they may lost their physical state.
• It is a bulk phenomenon.
• It is endothermic process.
• Temprature does not affect.
• Molecules absorb in gas or liquid phase very easily.
• No effect of sizes of particles and no pores on surface as it is the bulk phenomenon.
• Absorption leads to permanent reaction.
• No formation of layers.
• It is uniform process of absorption throughout the bulk.
• Its rate remains same through the process.
• e.g when leach or mosquito absorbs or sucks blood from human body.
• Molecules can not be separated as they are assimilated in the matrix(bulk).