The Spanish word 'exilio' (meaning 'exile') comes from the Latin word 'exilium', meaning 'exile' or 'banishment'. The Latin 'exilium' itself was derived from 'exul', which referred to a banished person or someone in exile. This shows how the concept of banishment or forced departure from one's homeland has maintained a consistent meaning from Latin to modern Spanish.

A closely related Spanish word is 'exiliado' (meaning 'exiled person'), which is the past participle used as a noun. Another related term is 'exiliar' (meaning 'to exile'), the verb form of the same root.

English speakers can easily remember 'exilio' by connecting it to the English word 'exile', which shares the same Latin origin and meaning. The English words 'expatriate' and 'expat', while from a different Latin root, express a similar concept of leaving one's native country, though usually with less negative connotations than 'exile'.