olemus
Merriam-Webster:
an entity, concept, or complex based on a more fundamental one

näiteid
https://en.wikipedia.org/wiki/Base_and_superstructure

https://en.wikipedia.org/wiki/Superstructure_(condensed_matter)

https://edepot.wur.nl/349783

https://link.springer.com/chapter/10.1007/978-3-319-12256-4_16