Wifi vs Zigbee

[Cool Javelin]

Hello, I understand Zigbee and WiFi share the same frequencies,

My questions:
Can I simply use different programming libraries to make the WiFi chip talk to Zigbee or,
Can I upload or alter the firmware that talks to the WiFi chip in an 8266 to speak Zigbee, or
Is there a hardware difference preventing me from ever using a regular 8266 (or 32) on a Zigbee network?

I see there are esp32's out there that can do Zigbee:

(https://www.amazon.com/waveshare-Microc ... 176&sr=8-4)

Do they have two 2.4GHz radios in them?

Thanks, Mark.

[MicroController]

My questions:
Can I simply use different programming libraries to make the WiFi chip talk to Zigbee or,

No.

Can I upload or alter the firmware that talks to the WiFi chip in an 8266 to speak Zigbee, or

No.

Is there a hardware difference preventing me from ever using a regular 8266 (or 32) on a Zigbee network?

Yes.