The Spanish word 'quemadura' (meaning 'burn' or 'burn injury') comes from combining the verb 'quemar' ('to burn') with the suffix '-dura', which indicates the result of an action. The verb 'quemar' itself derives from the Latin word 'cremare', meaning 'to burn'. The evolution from Latin 'cremare' to Spanish 'quemar' involved a change from 'cr-' to 'qu-', which is a common sound change pattern between Latin and Spanish.

The simpler and more common Spanish word 'quemar' (to burn) is directly related to 'quemadura'. While 'quemar' is the action of burning, 'quemadura' specifically refers to the injury or mark that results from burning. You might also encounter related words like 'quemado' (burned) or 'quemante' (burning).

While English 'burn' is not etymologically related to 'quemadura', we can find a connection through the English word 'cremate', which comes from the same Latin root 'cremare'. This connection can help English speakers remember that 'quemadura' relates to burning, as both 'cremation' and 'quemadura' involve the process or results of burning.