Kith and Kin

A variety of terms may be used to describe groups of similar peoples.   Kith is a broad term for similar peoples, often used when referring to origin mythos. Primekith, for example, were the first grouping of mortal humanoids given life in the First Age.   Kin is a term for similar people based on lineage or distinguished on hereditary groupings. This could be similar to a natural/speciestic distinction, such as Goblinkin or Giantkin.   Folk is a term used for groups of similar people distinguished on cultural groupings and similar lifestyles. For example, the Fey Folk are culturally distinct from humanoids, even if they have their own sub-cultures. Byrdfolk, Plantfolk, and Catfolk are all groups with cultural and lifestyle similarities, even though there may be further distinction between heritage.   -oid is a suffix used as a general term referring to appearance of a group of people/creatures. Gnomes, dwarves, halflings and elves are all humanoid, as they most closely resemble humans, but each with slight differences, whereas goblinoids all resemble goblins, in various shapes and sizes.   Ethnicity is used to refer to the mechanical statistic used by the respective game system. In 5e, it would be race, in Pathfinder 2e, it would be Ancestry, etc. This may also include sub-races.   Culture is used to refer to a narrative grouping based on origin. Z'Veena has a unique culture from Crossings Cave, and both of those are vastly different cultures from those from Goatsmith or New World Order.