In comparing Daoism and Confucianism, the phrase that typically represents a shared concept or characteristic between the two philosophies in a Venn diagram would likely be "order and stability."
Daoism emphasizes harmony with the Tao and natural flow, while Confucianism values social order and moral conduct. Both philosophies seek a harmonious society, albeit through different means and philosophies.
Therefore, if you are looking for a phrase to complete the diagram, the best fit is "order and stability."