Fondem
Fondem is a term with little evidence of a single, widely recognized meaning. In public usage it may appear as a proper noun (a name for a foundation, company, or fictional organization), or as a coined linguistic form whose meaning depends entirely on context. Because there is no established article or standard definition, fondem functions more as a label than as a fixed concept.
The spelling suggests possible Romance-language influence, and if fondem is derived from roots related to foundation
In non-fiction writing, fondem could be used as the name of a charitable foundation, a research fund,
There are no widely recognized institutions or concepts universally identified as fondem in major reference works.