Finnish word eranto comes from Finnish ero

Detailed word origin of eranto

Dictionary entry	Language	Definition
ero	Finnish (fin)	Difference, distinction. Discharge, dismissal. Divorce; used as a short form of avioero. Resignation. Rid; in the expression "to get rid of something" (päästä/hankkiutua eroon jostakin).. Separation, parting.
erota	Finnish (fin)	To differ, be different. To divorce. To resign. To secede. To separate.
eranto	Finnish (fin)	Compass declination.