A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
For questions dealing with the central nervous system, which includes the brain and spinal cord.
For questions seeking resources intended to help people with building a fictional world, such as books and software relating to worldbuilding itself (rather than the world that is being built). Consid…
For questions related to the production of certain types of food: plants, nuts and everything else that is edible and cultivated.
For questions about heat and temperature. For example, such questions could ask about the temperature of astronomical objects, living beings, or space.
For questions that deal with the natural resources found in the environment.
For questions concerning electromagnetic radiation in the visible spectrum.
For questions about settings in which superluminal travel and/or communication is a possibility.
For questions needing solutions regarding metallurgy, properties of real or fantastical metals or metallic substances, or the usage, acquisition, or in-world effects of them.
For questions about undead creatures, typically depicted as mindless, reanimated human corpses with a hunger for human flesh.
For questions about the movement of people between locations, includes migration.
For questions seeking guidance balancing the power and capabilities of a magic system.
For questions that have to do with the science or practice of drawing maps. If the question has to do with making maps this tag is a good fit. Note: This tag is about creating maps of physical feature…
For questions about extremely large artificial structures, including buildings.
For questions about technology that works with sizes of less than 100 nanometers, often the manipulation of individual molecules.
For questions that are set in an era corresponding to a level of technology between the invention of writing and the fall of the Western Roman Empire in 476 AD.
For questions of Earth\humans that extrapolate beyond available data: hundreds of years at least, thousands commonly, millions preferably.
For questions taking place in a medieval setting similar to culture and technology to medieval Europe.
For questions regarding clothes (and other related possessions) and trends of a culture.
For questions relating to water-based vessels. Ships in space should use the spaceship tag.
For questions about aquatic creatures traditionally resembling humans but with a fish tail instead of legs, or any sort of water-dwelling humanoid.
For questions about the characteristics of living beings in different settings. This tag is not for questions about the daily life of characters.
For questions relating to both people or animals dying and people or animals who have died.
For questions asking about current or future normal behavior in a given society.
For questions concerning the universe and alternate or parallel universes.
For questions involving large flying objects that are lighter than air.
For questions about implemented technology that can be used for transportation. For questions about the act of transportation, consider using [transportation] instead.
For questions about byproduct of the combustion of materials.
For questions about weapons that use an explosion as their main propellant.
For questions trying to understand the different possibilities for the future of Earth.
For questions about mathematics, including our own system of mathematics and alien versions of mathematics, focusing on their effects on societies and civilizations.
For questions about electromagnetic waves and particle radiation.
For questions about the process of moving en masse to a new area.
For questions discussing some level of self-awareness.
For questions dealing with things that happen beneath the surface of the planet or other celestial body, except for things that happen in water (use [underwater] for that).
For questions about the ability to live forever.
For questions based in worlds where technology is typically steam-powered rather than based on electricity.