'steadily' originates from Old English, specifically the word 'stede,' where 'stead' meant 'place' or 'position.' 'Changed' originates from Latin, specifically the word 'cambiare,' where 'cambiare' meant 'to exchange.'

'steadily' changed from Old English 'stede' to Middle English 'stedi,' and eventually became the modern English word 'steadily.' 'Changed' evolved from Latin 'cambiare' to Old French 'changier,' and eventually became the modern English word 'change.'

Initially, 'steadily' meant 'in a firm or fixed manner,' but over time it evolved to mean 'in a consistent or regular manner.' 'Changed' has largely retained its original meaning of 'to make or become different.'