Topic for object with both On/Off and Open/Close states

[Chad Smith]

I'm new to MQTT, and after getting everything integrated and running I'm starting to map out my topic structure.

I have a very general question for anyone with some input.

I was planning on having a topic path of something like ../../state in which I could record devices states like on/off, open/closed, essentially anything binary in nature.

But then I started thinking about what if a device can both be on/off and open/closed, like a fridge, microwave, etc.

Am I simply looking for naming convention examples and ideas to handle multiple binary states for a single device?

Some that come to mind are to name them like on-off, or on|off. Or maybe to just on. ../../device/on, ../../device/open

Thank you.