'consistently' originates from Latin, specifically the word 'consistere,' where 'con-' meant 'together' and 'sistere' meant 'to stand.' 'Available' comes from Old French 'avaler,' meaning 'to descend or go down.'

'Consistere' transformed into the Middle English word 'consisten,' and eventually became the modern English word 'consistently.' 'Avaler' evolved into the Middle English 'availe,' leading to the modern English 'available.'

Initially, 'consistently' meant 'standing together,' but over time it evolved into its current meaning of 'in a consistent manner.' 'Available' originally meant 'to be of use or benefit,' which has largely remained the same.