The Spanish word 'cojín' (meaning 'cushion') has an interesting journey from Latin origins. It comes from the Latin word 'coxa', which meant 'hip' or 'thigh'. This evolved into the Vulgar Latin term 'coxinum', meaning 'cushion' - likely because cushions were commonly used to sit on and support the hips. The word then passed through Catalan as 'coixí' and Old Spanish as 'coxín' before reaching its modern Spanish form 'cojín'. The change from 'x' to 'j' in Spanish is a common historical sound change that occurred in Spanish pronunciation.

While 'cojín' itself is a relatively common Spanish word, there aren't many simpler or more frequently used Spanish words that share its exact etymology. However, understanding that it comes from a word related to 'hip' can help remember its connection to sitting and comfort.

While English 'cushion' looks similar to Spanish 'cojín' and means the same thing, they actually have different etymological origins. The English word comes from Old French. However, English speakers can easily remember 'cojín' by noting its similar sound and identical meaning to 'cushion', even though they developed independently.