I always thought that ketchup and tomato sauce were the same lol, just named differently in different regions.
In australia, we put tomato sauce (ketchup) on sausages/hotdogs etc, and the stuff you put on pizza bases we call pizza sauce or sometimes tomato paste.
In australia, we put tomato sauce (ketchup) on sausages/hotdogs etc, and the stuff you put on pizza bases we call pizza sauce or sometimes tomato paste.

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