This is the 15380th most frequent Polish word.
sosen
"Of pines" (genitive plural of "sosna," meaning pine tree).
The word 'sosen' here is the genitive plural form of 'sosna' (pine tree), used to denote possession or association in describing the forest being full of pine trees.
Piękny las pełen wysokich sosen otacza naszą wioskę.
A beautiful forest full of tall pines surrounds our village.
In this sentence, 'sosen' is in the genitive plural form to describe the quantity and type of trees, emphasizing the presence of pine trees.
Nieopodal parku rośnie kilka młodych sosen.
Near the park, a few young pines are growing.
Here, 'sosen' is again used in the genitive plural form to illustrate the location where cones were found relative to the pine trees.