olemus
sõltub kontekstist

näiteid
UML: alamstruktuurideta olek
= a state having no substructure
https://fastbitlab.com/fsm-lecture-9-uml-simple-and-composite-states/
in business event models:
https://docs.tibco.com/pub/businessevents-datamodeling/5.2.2/doc/html/GUID-8C26970E-D441-4BB7-A548-879227504E2A.html