They're not interchangeable. Here's what makes each one different and why reaching for the wrong jar actually makes your food worse.
If you have ever spread pasta sauce on a pizza and wondered why the center went limp, or grabbed what the label called marinara and ended up with something that tastes more like Sunday gravy, you have run into the same problem everyone runs into: the tomato aisle is a labeling graveyard and nobody is enforcing the rules.
These are three distinct things with three distinct jobs. The good news is that each one has exactly one rule, and the rules are simple.
Real Neapolitan marinara has five ingredients: tomatoes, garlic, olive oil, salt, and basil. It cooks for 15 to 20 minutes at most, and that constraint is the whole point. A short cook keeps the tomatoes bright and slightly sharp rather than deep and mellow. Push it longer and you have made something else entirely.
Then there is what actually gets sold as marinara. Bertolli Vineyard Marinara with Merlot is a useful illustration: it has wine in it. Adding wine to a tomato sauce is a pasta sauce technique — you do that in the long simmer so the alcohol cooks off and the flavor integrates. Marinara does not simmer long enough for that to happen. What they made is actually a pasta sauce, and probably a fine one, but calling it marinara sidesteps the question of what the word is supposed to mean.
This matters because real short-cook marinara is more interesting than the label situation implies. Made correctly, it sits closer in character to pizza sauce than to what most people picture when they hear pasta sauce. The two are cousins. The heavier pasta sauce in your cabinet is a different branch of the family.
Most homemade pizza comes out with a soggy center because people spread the wrong sauce on it. Traditional pizza sauce is uncooked: crushed tomatoes, salt, maybe dried oregano. It goes on the dough raw and finishes in the oven at the same time the crust sets. The timing is the technique, not an accident.
San Marzanos are the standard choice because their lower water content means the sauce does not saturate the dough before it reaches temperature. But the tomato variety matters less than understanding the method: raw sauce, high heat, fast cook.
Some brands have gotten creative within these constraints. Botticelli Hot Honey Pizza Sauce adds honey and a bit of heat to the base, still raw, still designed to finish in the oven. It works for the same reason plain pizza sauce works: the application is correct. Swapping in pasta sauce is what breaks things, not the toppings.
Pasta sauce as a retail category is largely an American invention built around different priorities than either of the others. It typically starts with a soffritto, meaning onion cooked down in oil, sometimes with carrot and celery, before the tomatoes go in. Cook time runs from 45 minutes to a couple of hours. Wine or stock often appear. What comes out is richer and more savory, because it needs to cling to pasta and carry the whole dish.
The confusion mostly comes from brands spending decades labeling pasta sauce as marinara because marinara tested better in focus groups. There is no protected designation of origin to stop them, so the word marinara now means roughly whatever the company needs it to mean that quarter.
Pasta sauce on pizza is the most common mistake. The sauce is pre-cooked and relatively wet, and the aromatics do not handle high oven heat the way they handle a long simmer. Onion gets a strange sweetness at pizza temperatures. The pizza will not be ruined. It just will not be as good as it should be, and you will spend a while trying to figure out why.
Pizza sauce on pasta produces something that tastes unfinished. Raw-style crushed tomatoes with salt and oregano do not have the structural depth to carry rigatoni. The flavor is light in a way that reads thin rather than intentional.
Real marinara on pasta is the correct call, on the right pasta. Pair it with thin shapes: spaghetti, linguine, vermicelli. The lighter body works in its favor with those cuts, not against them.
One more worth trying: Neapolitan pizza marinara, which has no mozzarella at all. Just sauce, olive oil, oregano, and garlic on dough. If your only reference for marinara is the dipping cup at a chain restaurant, this will recalibrate things fast.
Raw sauce on pizza. Cooked sauce on pasta. Short-cook marinara on thin pasta shapes. That is the whole framework.
The products in the pasta aisle are not wrong. They just have the wrong names, and those names have been causing problems for decades. Once you know what you are actually looking at, picking the right sauce stops being a guess and starts being a decision.