While technically they use the same E-mount attachment, the difference lies in the size of the sensor the lens will cover.
FE lenses are made for full-frame sensor cameras like the Sony A1 II, Sony A7R V and Sony A7 III.
E lenses are made for APS-C (cropped) sensor cameras like the ZV-E series and Alpha 6000 series.
You can use either lens on either a full-frame or APS-C sensor but there are limitations. Using an E lens on a full-frame camera will activate APS-C crop mode and reduce the resolution of the images. FE lens can be used without fault on both models but they tend to be heavier than crop lenses and will add weight to your kit.