This is the 1299th most frequent Russian word.
ряды
"Ряды" means "rows," "ranks," or "lines" in English.
In this sentence, 'ряды' is used metaphorically to represent the members or ranks within an organized group, such as soldiers in an army.
В рядах армии наступило затишье.
There was a calm among the ranks of the army.
Here, 'ряды' literally means rows, describing a linear arrangement of trees, illustrating the visual sense of the word.
Ряды деревьев вдоль дороги создавали приятную тень.
Rows of trees along the road created a pleasant shade.
This usage of 'ряды' conveys the sense of aligning oneself with a group or cause, implying a membership or association similar to the metaphorical use in the first example.