How is the overlap between Polaris categories and WooCommerce categories achieved?

Up to you!

The configuration of the WooCommerce Polaris extension allows you to determine the correspondence between Polaris and WooCommerce taxonomies.

For each Polaris taxonomy (categories, classification; season, collection, level) can be associated with a WooCommerce taxonomy (category, label, attributes...). Custom taxonomies, brought by other extensions are also supported.

For each taxonomy, you will choose:

• if a different product must be created for each element (for example by color)
• To which WooCommerce taxonomy should it be associated
• If you select an attribute, you can also choose whether this attribute will be used as a variation and whether it should be visible publicly.

If none of this is selected, the taxonomy will simply be ignored.