Where does “kuusipuinen” come from?

kuusipuinen (Finnish) comes from Finnish kuusipuu, from Finnish puu, from Proto-Finnic puu, from Proto-Uralic puwe — tree, wood.

Ancestry of “kuusipuinen”, step by step

StepLanguageWordMeaning
1Finnishkuusipuuspruce tree
2Finnishpuutree; wood
3Proto-Finnicpuutree
4Proto-Uralicpuwetree, wood
Every word from Proto-Uralic puwe →Every word from Proto-Finnic puu →Every word from Finnish puu →