A female plant produces buds. A male plant produces flowers. A female plant can also produce male flowers, however, a male plant cannot produce buds. Male plants are useless unless you plan to cross breed or make rope. If you have a female that happens to be producing male flowers as well as buds, you can try to isolate that plant from the rest to prevent pollenating the females of the crop.

Females produce seeds in the buds once they're pollenated by male flowers. A good grow is females that never get pollenated whose buds swell to maximum size until harvest.

Again, male plants are almost useless.

Hope that answers your questions.

GM