Core product (the key benefit they want from a product)
Actual product (ability to consistently perform function, blend of form/function, attractive yet easy/safe to use, includes durability, reliability, ease for repair, packaging)
Augmented product (typical aspects of what goes into Augmented products, e.g. after-sale services)
Cautions: Anything you add has additional costs, is it worth it?
Product line
A set of closely related products
Product mix
All product lines and items that a company offers for sale