грибов

In a sentence

• В лесу мы нашли много грибов.

  In the forest, we found many mushrooms.

  Here, 'грибов' is used in the genitive plural form to denote a quantity of mushrooms found.

• Для супа мне нужно немного грибов.

  For the soup, I need some mushrooms.

  Here, 'грибов' is used in the partitive sense, again in the genitive plural form, indicating an undefined small amount.

• Я боюсь, что от грибов нам стало плохо.

  I fear that we got sick from the mushrooms.

  Here, 'грибов' is used in the genitive plural form after the preposition 'от' to indicate the cause of an action.