Product
A product in Care is a specific batch of a stockable item — a medication, nutritional product, or consumable — as it physically exists at one facility. It is the bridge between your catalogue ("we carry Paracetamol 500mg") and your shelves ("this box, lot A1234, expiring next March").
Inventory Item
An inventory item is the live stock count of one product at one place in your facility — how many units of a specific medicine, consumable, or device are on hand in a particular store, ward, or pharmacy right now. It is the answer to the everyday question "do we have it, and how much?"
Supply Request
A supply request is a line item asking for a specific quantity of a catalogue product to be moved into a facility location. It is how a ward, pharmacy, or store says "we need this much of this item here" — the demand signal that drives stock movement across your facility.
Supply Delivery
A supply delivery records stock actually moving — a product arriving at a location, whether shipped in from an outside supplier or transferred between rooms inside a facility. It is the "stock in" side of inventory: everything delivered, minus everything dispensed, equals what is on the shelf right now.