Sinas (pronounced SEE-NUHS) are energy beings born from common concepts shared by humans on earth.
These Sinas also have powers or abilities, with some being related to their concept and perhaps some not.In order for a concept to birth a Sina, it must hold enough power in the world.
Concepts are more powerful when multiple other smaller concepts can fall within them. However, if those smaller concepts also have multiple other more specific concepts under them, then the concept above them may be to powerful to birth only a single being.
Ex: There cannot be a Sina of all animals because those animals may have many variants on there own (Ex. Different types of cats or dogs)
Sinas cannot truly die unless killed by special means - they are immortal. They can however, seize to exist if their concept seizes to exist.
For half Sinas, this would only mean that they would no longer be a Sina, but rather a mere mortal.
Half-Sinas are physical beings that have taken it onto themselves to represent a concept enough in order to become a Sina of it. (Like Hackasina and Codasina for example. They took it onto themselves to become representations of what perhaps they believe hackers and coders are or should be like in their world, in order to become these powerful beings.)
Some full-Sinas (or 'pure' Sinas) can actually take on physical form/s as they please, while others may need some form of 'host' to use as a physical body instead (like Darkasina for example).