The main difference between product design and UX design comes down to scope, ownership, and what you're actually responsible for delivering. There's real overlap between the two, but they aren't the same thing.

UX design is focused on how users interact with a product. UX designers run user research, build personas, map user journeys, define information architecture, create wireframes and prototypes, and run usability tests. The job is to understand users well enough to advocate for them, and to make sure the product is intuitive and accessible. It draws heavily from psychology and behavioral science.

Product design includes all of that, and then keeps going. A product designer is also expected to handle visual design, brand expression, design systems, and business strategy. More importantly, they own the design end-to-end, from early discovery through shipping and post-launch iteration. It's a broader mandate.

The other real difference is what you're measured against. UX designers are usually evaluated on usability, task completion, and how well the experience holds together. Product designers get evaluated on those things too, but also on conversion rates, retention, feature adoption, and revenue. That's a different kind of accountability.

In practice, the line between these roles depends a lot on where you work. At large companies, UX and product design can be entirely separate teams with different reporting structures. At startups and most modern tech companies, the product designer title has mostly replaced UX designer, and one person is expected to cover both. The title shift reflects a real expectation change, not just a rebrand.

The simplest way to think about it: product design contains UX design, but UX design doesn't cover everything product design requires. If you're doing UX work without touching business outcomes or visual systems, you're doing UX design. If you're responsible for the whole thing, you're doing product design.