well ... there are sm common things between solutions and colloids
solutions even and fully mixed together and so are colloids
when we let solutions and colloids settle down both of them do not have boundaries ... the particles of colloids and solutions do not settle down
Both are liquids. Both will pass through filters without seperation.
You can see through a solution, as the ions of the solute are dissolved. A colloid is a suspension of insoluble ultra microscopic particles or large molecules in water or other liquid, kept in suspension by Brownian motion.