When you say bind together… are you talking about how (for example) IKEA bulbs and buttons can be ‘bound’ together without the need for a hub ?
in Home assistant, you join your devices to the network by pairing with the coordinator, but there is no association at that point between say the button and the bulb. You’d need to create an automation to link the action of the button to whatever you wanted the bulb to do (say turn on or off).