[Symbiotic]: The Hunger are dependent on their now radioactive disease for strength. When fighting on their own lands, units gain a bonus to combat, but when away, they are weaker.
[Dependent]: To avoid becoming mindless husks again, the Hunger must stay in the presence of their radioactive disease. They aren't able to expand as much without building more settlements, but their reach is extended a bit further than others when they build new ones.