This is the 4875th most frequent Polish word.
oznaki
Signs or indications.
In this sentence, 'oznaki' refers to observable signs or indicators of spring, like budding leaves or blossoms.
Na drzewie pojawiły się oznaki wiosny.
Signs of spring appeared on the tree.
Here, 'oznaki' is used to describe symptoms or manifestations of a potential illness, indicating something to be concerned about.
Niepokojące oznaki choroby sprawiły, że poszedł do lekarza.
Worrisome symptoms of illness prompted him to visit the doctor.
In this context, 'oznaki' points to physical appearances or conditions that suggest tiredness, such as eye bags or pallor.