This is the 685th most frequent Serbian word.
месеци
"Месеци" in English means "months."
Here, 'месеци' is used in the nominative plural form to refer to multiple months as the subject of the sentence.
Месеци су пролазили где су се све ствари мењале.
Months went by as all things changed.
In this sentence, 'месеци' appears in the genitive plural form indicating a period of time.
Радим на овом пројекту већ неколико месеци.
I have been working on this project for several months.
Here, 'месеци' is used in the genitive plural form after a number to denote quantity.