Sui generis
In sociology, the "sui generis" is what has been externalized, then internalized in the overall public and becomes a part of society that simply exists in its construct. It is not something that is not thought to have been created, because it is imbedded in everyone's way of thinking and being. Instances include the idea of love, or going to school, or clothing belonging to a specific gender. These examples are "sui generis" for they simply exist in society and are widely accepted without thoughts of where they come from or how they were created.
Sancus
According to ancient Latin sources the meaning of the term "semones" would denote "semihomines" (also explained as "se-homines", men separated from ordinary ones, who have left their human condition: prefix "se-" both in Latin and Greek may denote segregation), or the "dii medioxumi", i.e. gods of the second rank, or semigods, entities that belong to the intermediate sphere between gods and men. The relationship of these entities to "Semo Sancus" is comparable to that of the "genii" to "Genius Iovialis": as among the "genii" there is a "Genius Iovialis", thus similarly among the "semones" there is a "Semo Sancus". The "semones" would then be a class of semigods, i.e. people who did not share the destiny of ordinary mortals even though they were not admitted to Heaven, such as Faunus, Priapus, Picus, the Silvani. However some scholars opine such a definition is wrong and the "semones" are spirits of nature, representing the generative power hidden in seeds. In ancient times only offers of milks were allowed to the "semones".