Where does “pohja-ala” come from?

pohja-ala (Finnish) comes from Finnish älä, from Finnish ala-, from Proto-Finnic ala, from Proto-Uralic ëla — below.

Ancestry of “pohja-ala”, step by step

pohja-ala traces back through two separate lines of ancestry.

via Finnish älä

StepLanguageWordMeaning
1FinnishäläThe second-person singular form of the negative...
2Finnishala-under-, sub-, lower, nether; inferior
3Proto-Finnicalalower; under
4Proto-Uralicëlabelow

via Finnish pohja

StepLanguageWordMeaning
1Finnishpohjabottom; bed; fundament
2Proto-Finnicpohjabottom; base, foundation; north
3Proto-Finno-Permicpošja
Every word from Proto-Uralic ëlaEvery word from Finnish ala-Every word from Proto-Finnic ala