 Sticking with unionism for the moment, we can say that, as any ground contributes to explaining what it grounds, any ground is a partial ground. But not all partial grounds provide fully adequate explanations of what they ground, so not all partial grounds are full grounds. A merely partial ground is a partial ground that isn’t a full ground. By grounding we henceforth mean partial grounding. The example of the truckers picketing above illustrates the notion of merely partial grounding—we would need to add facts about the trucking company and relations between the picketers and the company (e.g., that the picketers work as drivers for the company) to get a fully adequate explanation of the fact that they’re striking. As for full grounding, a common view is that conjunctive facts are fully grounded by their conjuncts—the collection consisting of [The bowl is brittle] and [The truckers are striking], for example, is thought to fully ground [The bowl is brittle and the truckers are striking].