This is the 6134th most frequent Russian word.
строй
The Russian word "строй" can be defined as "structure," "system," or "order," and in specific contexts, it can mean "formation" or "military formation."
Here, 'стройным' derives from 'строй' to describe a harmonious and organized arrangement.
Пейзаж отличался стройным рядом сосен.
The landscape was marked by a row of slender pines.
In this sentence, 'строй' refers to the structure or organization of the political system.
Политический строй страны изменился за последние десятилетия.
The political system of the country has changed over the last decades.
Here, 'строй' is used in the context of military formation or arrangement of soldiers.