This is the 647th most frequent Finnish word.
joukko
Group, crowd, or set.
Here, 'joukko' refers to a collection or group of people.
Joukko ihmisiä odotti bussia pysäkillä.
A group of people were waiting for the bus at the stop.
In this usage, 'joukko' is used in a mathematical context to describe a set of items.
Matematiikassa joukko tarkoittaa tiettyä elementtien kokoelmaa.
In mathematics, a set means a specific collection of elements.
In this sentence, 'joukko' means a group or assembly of people.