Olive oil is oil from olives, with marketing playing up differences between brands for the sake of price stratification.
Truffle Oil is olive oil with synthetic flavor and perfume added, to make people think it's somehow related to truffles. Real truffle oil isn't a thing: truffles are consumed shaved into food like a hard cheese, generally, and their flavors don't infuse oil well at all. Marketing here isn't about making some truffle oil look better than others; it plays the role of making people believe that truffle oil is a thing at all.
Truffle Oil is olive oil with synthetic flavor and perfume added, to make people think it's somehow related to truffles. Real truffle oil isn't a thing: truffles are consumed shaved into food like a hard cheese, generally, and their flavors don't infuse oil well at all. Marketing here isn't about making some truffle oil look better than others; it plays the role of making people believe that truffle oil is a thing at all.