I think you mean lean and agile.From what I know about these two methods differences are;-
Sustainable SC deals in the reduction of wastage in terms of resources by means that do not affect on the quality of work.
Robust SC deals in dynamic models of SC where at any nick of time changes can be done according to market scenario.
the interruption in the chain is the problem that the world is facing now. It is no secret that Chinese goods have stopped in production and deliveries such that the usual customers are caught flat-footed without the supplies. Although they are searching for alternatives on a higher price but that is a lesson to be learned that the biggest supplier with the lowest price can be the biggest headache when it cannot deliver anymoreA sustainable supply chain indicates term commitment to procurement and supply chain management that considers the environmental, social and economic consequences of the supply chain.
A robust supply chain focuses on minimizing disruptions that cost delivering companies a lot of time and money, in addition to damaging their reputation. This is achieved by maintaining consistency in operations. Consistency in the supply chain is vital to a company’s overall performance.