These are exactly the same product - Adobe seem to under the impression that tacking on "Photoshop" somehow improves the product.
What johnhawk666 said.
No-one but Adobe understands why Adobe insists on referring to Lightroom as both Adobe Lightroom and Adobe Photoshop Lightroom.
It just confuses people.
Quote "No-one but Adobe understands why Adobe insists on referring to Lightroom as both Adobe Lightroom and Adobe Photoshop Lightroom."
Up to a few months before Lightroom was released in the market and still in "Beta" mode the decision was made to change the name from "Adobe Lightroom" to "Adobe Photoshop Lightroom". This was a poor decision on Adobe's part and has led to confusion to what Lightroom is as a product.
Lightroom is in effect an alternative to "Bridge and the Adobe Camera Raw Plugin" that is available for the use in Photoshop CS and Photoshop Elements.
Lightroom is not Photoshop and the inclusion of the name only causes confusion.
Yes, I still remember the moment "Photoshop Lightroom " appeared as a real "what the ...." moment.
Probably some bright spark in Marketing thought that this would help sales no end.