| Катя потрогала бороду Коли. | Katya touched Kolya's beard. |
| Катя потрогала колину бороду. | Katya touched Kolya's beard. |
| Его борода была густая и жёсткая. | His beard was thick and stiff. |
NB When the word борода functions as a subject and has no descriptive modifier, the construction борода у + Genitive is often preferred to (a) and (b), above: | |
| Борода у него была густая и жёсткая. | His beard was thick and stiff. |