I mostly agree with you. I might not know every English word but I won't consider myself fluent until I can understand and use my second language at the same le

I mostly agree with you. I might not know every English word but I won't consider myself fluent until I can understand and use my second language at the same level as my first. In other words I should be able to easily explain anything I can explain in my 1st language whether it's how to drive, how to change a tire, what the parts of a bicycle are (wheels, spokes, chain, gears, handlebars, tire, kick stand, peddles, brakes, )etc. Any native 8 yr old can name all those things. Similarly describing a car. The stick shift, clutch, odometer, glove compartment, engine, seat belts, arm rest, windshield, wheel well, windshield wipers, reat view mirror, antenna, etc. Any native speaker will know all those words. I'm still at the "explain with smaller words" phase like "antenna" would be "metal stick that receives radio waves". I'm not fluent.