If you look at the Victron material, you will note they stick rather rigidly to a specific set of terms, to avoid confusion.
- PV-inverter: This is an inverter without battery storage that pushes the power directly into the grid.
- AC-coupled PV: The energy from the PV modules is pushed directly into the AC side through a PV-inverter.
- DC-coupled PV: The energy from the PV modules is pushed into the batteries/DC-bus through a solar charger.
- Multi/Quattro: A Multifunction inverter/charger.
No room for confusion here 