Normally, you think about SM forces being conveyed by gluons, weak force gauge bosons, or photons (ignore that troublesome gravity thing for the moment) between point particles. There is also a property of fermions (particles with total angular momentum Q=1/2, 3/2, etc.) that they can't occupy the same place at the same time, which is distinct from the property of bosons (particles with total angular momentum Q=1, 2, etc.) that allows more than one boson to be in the same place at the same time. I've heard of the term "Fermi contact force" and assumed that this is the physical effect arising from fermions not being in the same place which adds an additional (usually negligible) interaction to the three SM forces. I don't mean what Wikipedia defines as a Fermi contract interaction https://en.wikipedia.org/wiki/Fermi_contact_interaction which is an EM phenomena, so I may be using the wrong terminology, or there may be two phenomena with similar names. Is this correct, or is it the case, for example, that a Fermi contract force is simply a black box sort of like the four fermion "Fermi interactions" https://en.wikipedia.org/wiki/Fermi's_interaction that abstracted weak force interactions before we knew about gauge bosons? Or is it something entirely different?