This is the 6918th most frequent Russian word.
аллеи
"Аллеи" (plural) means "alleys" or "avenues" lined with trees or shrubs.
Here, 'аллеи' is in the nominative plural form, specifying the subject of the sentence referring to the pathways.
Аллеи в этом городе всегда ухожены.
The alleys in this city are always well-maintained.
The word 'аллеям' is used here in the dative plural form to indicate the location where the action was taking place, showing the pathway context.
Мы прогуливались по красивым аллеям парка.
We were strolling along the beautiful park alleys.
In this sentence, 'аллеи' is used in the genitive singular form to describe possession or relationship, indicating something in the alley’s shadows.