What is the difference between using DJI Avata with DJI Goggles 2 and DJI FPV Goggles V2?

DJI Goggles 2 have more comprehensive features for DJI Avata.

It supports Head Tracking Mode that allows you to experience immersive flight from a first-person perspective more freely. It also adopts DJI's latest flagship O3+ Video Transmission, which can achieve high-definition and low-latency video transmission. 

DJI Goggles 2 features an upgraded display and diopter adjustment. It is smaller, lighter, more comfortable to wear, and more intuitive for user interaction.