Different manufacturers....
It's all about semantics, but the different manufacturers are talking the same thing.
I currently fly two very different transport cat aircraft types -
Type 1:
Vfe = "Maximum Flap Extended Speed or Operating Speed"
Flap 2 (15deg)=200kts, Flap 3 (20deg)=185kts, Flap full (40deg) =177kts.
Type 2:
Flap Extended Speeds
The maximum permissible airspeeds for extending the wing flaps and for flight with the flaps extended
(VFE) are:
To/App (10deg)- 135kts, ldg (40deg) 115kts.
The common theme is that it's the maximum speed at which you can extend them or accelerate to with them already extended.
C210 drivers beware - different models have different flap speeds. From memory N series had a flap speed of 156 kts for the first stage. I never found out what the physical difference was compared to earlier models.