olemus
liikideks jaotus kontekstist sõltuvas tähenduses
Wiktionary:
the act of forming into a class or classes; a distribution into groups, as classes, orders, families, etc., according to some common relations or attributes

ülevaateid
https://en.wikipedia.org/wiki/Class_(set_theory)
https://en.wikipedia.org/wiki/Classification
https://www.digitalguardian.com/blog/5-common-data-classification-types
https://kids.britannica.com/students/article/biological-classification/611149

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