Can someone please explain the primary differences between these Lr apps?

In a nutshell, Lightroom Classic is the full-featured Lightroom  that allows you to manage your images on your computer, locally, and has a full-featured set of controls and file management assets. Lightroom CC (the cloud-based Lightroom) is primarily designed for people who are on the go and want access to their images on all devices instantly and have the capability to share those images quickly and easily with others. Lightroom CC does not have some of the capabilities that Lightroom Classic does, such as printing. However, for those who thrive on portability it seems to be the preferred Lightroom.

Working "between" these apps can be expected to be a little difficult IMO, just the same as working "between" Bridge and LR Classic has always been expected to be a little problematic.

That's because these alternative applications exist to answer different demands - to facilitate different desired workflows.

Any transfer of work between, is therefore bound to be compromised to some degree, whatever efforts are made to deliver compatibility. Each has got some inherent strengths and characteristics that the other inherently lacks. To limit each to only make and use metadata that the other equally supports, would have been to hobble both.

Hi Harrybarnettw,

Please take a look at the below descriptive articles that explains the basic difference between the two apps:

Lightroom vs. Lightroom Classic | Adobe

Lightroom CC vs. Lightroom Classic | What's the Difference? | Digital Trends

Now to your query, Lightroom Classic's face tagging works a bit differently but you may achieve similar results: Use Intelligent facial recognition in Lightroom Classic ​

Using a blend of both the apps is always beneficial as all the data is being synced to the cloud.

Thanks,

Akash