This is the 7428th most frequent Russian word.
грибов
The Russian word "грибов" means "of mushrooms."
Here, 'грибов' is used in the genitive plural form to denote a quantity of mushrooms found.
В лесу мы нашли много грибов.
In the forest, we found many mushrooms.
Here, 'грибов' is used in the partitive sense, again in the genitive plural form, indicating an undefined small amount.
Для супа мне нужно немного грибов.
For the soup, I need some mushrooms.
Here, 'грибов' is used in the genitive plural form after the preposition 'от' to indicate the cause of an action.