'appropriate' originates from Latin, specifically the word 'appropriatus,' where 'ad-' meant 'to' and 'proprius' meant 'own.' 'Execute' originates from Latin, specifically the word 'executus,' where 'ex-' meant 'out' and 'sequi' meant 'follow.'

'Appropriatus' transformed into the French word 'approprier,' and eventually became the modern English word 'appropriate' through Middle English. 'Executus' transformed into the French word 'exécuter,' and eventually became the modern English word 'execute.'

Initially, 'appropriate' meant 'to make one's own,' but over time it evolved into its current meaning of 'suitable or fitting.' 'Execute' initially meant 'to follow out,' and this meaning has largely remained the same in modern usage.