How are Assemble$-$to$-$Order and Make$-$to$-$Order different order fulfillment types?

Make$-$to$-$Order requires a long time to manufacture. Assemble$-$to$-$Order is relatively short using in$-$stock components

Make$-$to$-$Order and Assemble$-$to$-$Order are interchangeable terms and essentially the same.

Assemble$-$to$-$Order takes longer than Make$-$to$-$Order since end product is customized to customer requirements