As a practical matter, most fruits and vegetables have quite low caloric content, so those are the things that you can use to fill your plate. They're typically more filling when they're warm. As long as you prepare them without adding fat, creams or high-carb dressings, you can eat practically all the vegetables you want. Seriously. As for fruits, you can't eat an unlimited amount, but they'll definitely help you to avoid those "tiny" portions of high-calorie disaster foods. A whole cantaloupe plus two plums have the same number of calories as four little "reduced-fat" SnackWell cookies. Make good choices, and losing fat doesn't need to be about deprivation.
Depending on the type of beans some can have high carbs and thus need to be treated as carbs. As for broccolli it is what I call the perfect vegetable - you can eat tonnes of it!
I am not sure about the US but over here the word bean is used very commonly whereas legume is rarely used. Most legumes in Australia are called beans believe it or not.
Tidey being from an O/S country - I just wanted to make sure what she was talking about!