Answer
Organelles are internal structures of a cell that carry out specialized metabolic functions. They are required for a cell's survival. Two examples are the mitochondria and ribosomes.
Inclusions are not essential to a cell's survival. They include things that are floating around in the ICF, such as cell products and foreign bodies. Two examples are dust particles and fat droplets.
Work Step by Step
Organelles are required for a cell's survival and include everything the cell needs to keep living. Inclusions are just included in the cell and it doesn't really matter to the cell's survival. A cell could have a dust particle floating around in the ICF or not. Inclusions are also never enclosed in a membrane.