What is the difference between one off and a batch production?

Here are a few basic descriptions of the different types of production. One off production -one product is made often a prototype.

Batch production -A small quantity of the product is made two or more up to one hundred.

Mass production - A large number of the product is made on a production line. Many hundreds of the product could be made. This is often called repetitive flow production.

Continuous production - Many thousands of the product are made. The difference between this and mass manufacturing is that continuous production is on 24 hours a day.

Just in time production - The arrival of parts at just the exact time that they are required in the factory.