Full Idea
On my view, grounding is a singular relation between facts. ...Facts, on this view, are obtaining states of affairs.
Gist of Idea
Grounding is a singular relation between worldly facts
Source
Paul Audi (Clarification and Defense of Grounding [2012], 3.2)
Book Reference
'Metaphysical Grounding', ed/tr. Correia,F/Schnieder,B [CUP 2012], p.103
A Reaction
He rest this claim on his 'worldly' view of facts, Idea 17293. I seem to be agreeing with him. Note that it is not between types of fact, even if there are such general truths, such as in chemistry.
Related Idea
Idea 17293 Worldly facts are obtaining states of affairs, with constituents; conceptual facts also depend on concepts [Audi,P]