'commonly-formed' originates from the combination of 'common' and 'form', where 'common' meant 'usual' and 'form' meant 'shape or structure'.

'commonly-formed' changed from the Old English word 'cuman' meaning 'to come together' and 'form' from Latin 'forma', eventually becoming the modern English word 'commonly-formed'.

Initially, it meant 'shaped in a usual manner', but over time it evolved into its current meaning of 'created or structured in a way that is typical or usual'.