olemus
(2a) kontekstist sõltuv järeltulija, põlvneja
=
(i) a person, plant, or animal that is descended from a particular ancestor
(ii) a machine, artefact, system, etc., that has developed from an earlier, more rudimentary version
https://sebastian.expert/ancestor-descendant-sibling-parent-child-explained/

(2b) alamtipp puustruktuuris
= a subnode of a tree
https://image.slidesharecdn.com/ds-lecture-5-171012040745/95/trees-in-data-structure-13-1024.jpg

vt ka
- allajärjestus
- eellane (2)
- hierarhia
- järglane (1)
- puu
- õigusjärglane
- ülesjärjestus