Spray Nozzle (Gun Type): A rear-trigger spray gun with an adjustable nozzle head to change water patterns (usually from a fine mist to a powerful jet).
Quick Connectors (2x): These are the green and black fittings used to attach the hose to the spray gun or the tap adapter.
Water Stop Connector: One of the connectors likely features a "water stop" mechanism, which allows you to change attachments without turning off the faucet.
Tap Adapter: A threaded fitting (the smaller black piece) designed to screw onto an outdoor water faucet so the hose can be "snapped" on easily.