Planets

Capital worlds
Capital worlds are planetary bodies which are the largest in a fully colonized system. These planets usually house some kind of political organ and have multiple billions of inhabitants. It usually has a very large garrison and is very well protected. It has a large GDP and usually a high standard of living compared to other planets in the owning faction.

Major Colonies
Major colonies are planetary bodies with a large significance to the owning faction, being in a large 'permanent' population, the gathering of valuable materials or with a large cultural meaning.

Minor Colonies
Minor colonies are planetary bodies with low to no significance to the the owning faction. They may be considered as 'replacable' and usually don't have a large permanent population. These planets are usually used to gather materials, production or research.