This is the 18004th most frequent Polish word.
świerkami
"Świerkami" means "with spruces" or "by spruces" in English, referring to the instrumental plural form of "świerk" (spruce tree).
Here, 'świerkami' is used as a noun in instrumental plural form, indicating the means or accompaniment referring to the type of trees.
Las był pełen świerkami.
The forest was full of spruces.
In this sentence, 'świerkami' is again instrumental plural, showing the location or elements in the vicinity.
Cieszyłem się spacerem między pięknymi świerkami.
I enjoyed walking among the beautiful spruces.
Here, 'świerkami' in instrumental plural illustrates the objects used for decoration.