'commonly-shaped' originates from the combination of 'common' and 'shape', where 'common' meant 'usual' and 'shape' referred to 'form or appearance'.

'commonly-shaped' evolved from the Middle English word 'commune' and 'shapen', eventually becoming the modern English term 'commonly-shaped'.

Initially, it meant 'having a usual form', and this meaning has largely remained the same in modern usage.