'hazardous' originates from Old French, specifically the word 'hasard,' where 'hasard' meant 'game of chance.' 'Constructed' comes from Latin, specifically the word 'constructus,' where 'con-' meant 'together' and 'struere' meant 'to build.'

'hazardous' changed from the Old French word 'hasard' and eventually became the modern English word 'hazardous.' 'Constructed' evolved from the Latin 'constructus' through Middle English 'constructen.'

Initially, 'hazardous' meant 'related to a game of chance,' but over time it evolved into its current meaning of 'dangerous or risky.' 'Constructed' has largely retained its original meaning of 'built or assembled.'