The Spanish word 'fideo' (meaning 'thin noodle') comes from Hispano-Arabic 'fidáwš', which meant 'noodle'. This in turn originated from the Arabic word 'fidaws', meaning 'that which overflows'. The semantic evolution from 'that which overflows' to 'noodle' likely relates to the way noodles expand and seem to overflow when cooked in water.

There aren't many common Spanish words that share the same Arabic root as 'fideo'. This is because while Arabic contributed many words to Spanish vocabulary during the medieval period of Muslim rule in Spain, these borrowings often stand somewhat isolated in modern Spanish.

There aren't any common English words directly related to 'fideo', as this word comes from Arabic roots that didn't make their way into English. However, English speakers might recognize 'fideo' from Mexican cuisine, where it refers to a type of thin pasta used in soups and other dishes.