What's the diffrance between VO & VE ?

VO is a variation order occurred when the project owner request some modification in the specification, drawing, or something else which cause a noticeable variation in the bill of quantities, also it could be due to a Force Majeure like COvid19 lockdown, in these cases the main contractor claim for a variation cost and time (variation order), while the VE is a value engineering that can be done by the contractor or a third party (consultant company) to re-valuate the project cost by removing or substituting some materials by an alternative or conduct some minor modification in the drawings to increase the project cost

Dont ask this vague question to me...

I would go like, here is what I can see..

one ends with O and one with E...