köken: Inherited from Old Spanish dos, from Latin duōs, from Proto-Italic *duō, from Proto-Indo-European *dwóh₁. Cognates include Ancient Greek δύο (dúo), Old English twa (English two), Persian دو. PIE word *dwóh₁
aile: a dos manos, cada dos por tres, como dos y dos son cuatro, como no hay dos, como tres y dos son cinco, de dos caras, dos patitos, dos puntos, dos que tres, dos tiempos
köken: Attested since 1842 as baj (“feces”), usually in the expression fy baj, a form of reprimand used for and by small children. Johan Ernst Rietz's Svenskt dialektlexikon ("Swedish dialect dictionary") also suggests a relation to Middle High German baht.
aile: bajsblöja, bajsbrun, bajskorv, brunka, kiss och bajs-humor