'erroneous' originates from Latin, specifically the word 'erroneus,' where 'errare' meant 'to wander or err.' 'Invalid' comes from Latin 'invalidus,' where 'in-' meant 'not' and 'validus' meant 'strong or valid.'

'erroneous' changed from the Latin word 'erroneus' and eventually became the modern English word 'erroneous.' 'Invalid' transformed from the Latin 'invalidus' to the modern English 'invalid.'

Initially, 'erroneous' meant 'wandering or straying,' but over time it evolved into its current meaning of 'incorrect or mistaken.' 'Invalid' originally meant 'not strong,' but now it means 'not valid or acceptable.'