This is the 668th most frequent Russian word.
села
The Russian word "села" can mean: 1. "Villages" (plural of "село"). 2. "Sat down" (past tense of "сесть" for a feminine subject).
Here, 'села' is the past tense, feminine singular form of the verb 'сесть', indicating that a female subject took a sitting position.
Она села на стул.
She sat on the chair.
In this context, 'села' is a noun in the nominative plural form, meaning 'villages', indicating the subject of the sentence referring to multiple small settlements.
Села маленькая деревня на холме.
A small village settled on the hill.
Here, 'села' as a verb means the car 'sank' or lowered, emphasizing a result of external conditions affecting the subject.