The Spanish word 'cortina' (meaning 'curtain') traces back to the Late Latin word 'cortina', also meaning 'curtain' or 'hanging'. This Late Latin term developed from the Vulgar Latin 'cors' meaning 'courtyard', which itself came from Classical Latin 'cohors' meaning 'enclosure' or 'courtyard'. The semantic evolution from 'courtyard' to 'curtain' likely occurred because curtains were commonly used to divide spaces within courtyards and buildings.

The Spanish word 'corte' (meaning 'court') and 'corral' (meaning 'yard' or 'pen for animals') are related to 'cortina' as they all stem from the same Latin root 'cohors'. While 'cortina' evolved to refer to the hanging fabric that divides spaces, 'corte' and 'corral' maintained meanings more closely related to the original sense of an enclosed space.

English speakers might recognize the connection to words like 'court', 'courtyard', and 'cohort', which all come from the same Latin root 'cohors'. While 'cortina' evolved to mean 'curtain' in Spanish, these English words maintained meanings more closely related to the original Latin sense of an enclosed space. The English word 'curtain' itself is also related, having come from the same Late Latin 'cortina', making it a direct cognate of the Spanish word.