köken: Inherited from Old Spanish, from Latin fundus PIE word *bʰudʰmḗn The preservation of the initial older 'f' in this word may be to distinguish it from the doublet hondo, which became an adjective and continued its phonetic evolution as expected. Also the doublet of fundo, a later borrowing.
aile: de fondo, Fondo Monetario Internacional, fondo mutuo, fondos de reptiles, fondos propios, irse a fondo, libro de fondo, mar de fondo, música de fondo, pozo sin fondo
background (portion of an image or scene behind the main figure; portion less important than the figure) · one's personal background · activity not normally visible to, or immediately relevant to a user
köken: Borrowed from Russian фон (fon), from French fond, ultimately from Latin fundus (“ground, foundation, bottom”). Compare Italian fondo. Doublet of fundo.