Classification of Colloids on the basis of nature of interactions between Dispersed phase and Dispersion medium

What is the dispersed phase and dispersion medium in gel?

What are the dispersed phase and dispersion medium in milk

Dispersed phase and sispersion medium for fog are :

What is dispersed phase and dispersion medium in a colloid ?

How are colloid classified on the basis of: ltbtgt (a) physical state of components (b) nature of dispersion medium (c ) interaction between dispersed phase and dispersion medium ?