The Spanish word 'lavador' (meaning 'washer') comes from combining the verb 'lavar' ('to wash') with the agent suffix '-dor'. The verb 'lavar' itself derives from the Latin word 'lavare', which also meant 'to wash'. The suffix '-dor' is commonly added to verbs in Spanish to create nouns that refer to the person or thing that performs the action of the verb.

Some simpler related Spanish words include the basic verb 'lavar' (to wash), which is one of the first verbs Spanish students learn. You might also encounter 'lavabo' (sink), 'lavandería' (laundromat), and 'lavaplatos' (dishwasher), all of which share the same root related to washing.

While not as immediately obvious, English has several words related to 'lavador' through the Latin 'lavare'. These include 'lavatory' (a place for washing, now meaning bathroom), 'launder' (to wash clothes), and 'lotion' (a washing solution, now a cosmetic liquid). The word 'lava' (molten rock) also comes from this root, as it was seen as washing down mountains.