(Some) australian aboriginal groups "wrap around" their kinship terms, so they can use a finite (but unbounded) set of dedicated words for arbitrarily complex relationship paths.

In particular, the example which led me to learn about this system was someone traversing something like "neighbour's cousin's friend's neighbour's adopted corella" and addressing him (once translated into english) as "uncle".

https://yidakistory.com/yolngu-malk-or-skin-names/