We understand materials through contrast. In my jars, I'm paying attention to the spiraling, slower outer movement of the jar bodies and how they push against the tighter, faster, inner concentric circles of the lid connection, ornamentation, and finial.
Lid and jar fit is paramount to a successful lidded jar. The tactile experience of lifting and replacing a lid should be invoke a celebration of mastery in craft. Whether the jars are used for rice, dog treats, cookies, and other dry storage, or for decoration, the connection needs to feel, sound, and look like a perfect pairing.