The Spanish word 'toalla' (meaning 'towel') comes from the Old Spanish word 'tobaja'. This in turn can be traced back to the Germanic word 'thwahljô', which also meant 'towel'. The evolution from 'thwahljô' to 'tobaja' to 'toalla' shows how the pronunciation and spelling gradually simplified over time, while maintaining the same basic meaning of a cloth used for drying.

While 'toalla' itself is a relatively common Spanish word, there aren't many simpler or more common Spanish words that share its Germanic root. However, you might encounter related words like 'toallero' (towel rack) or 'toallita' (small towel), which are derivatives of 'toalla'.

Interestingly, the English word 'towel' is related to 'toalla', as they both ultimately come from the same Germanic root 'thwahljô'. This makes it easy for English speakers to remember the Spanish word - just change 'towel' to 'toalla'! This is one of those fortunate cases where related words in both languages maintained very similar meanings over time, making it easier for language learners to make the connection.