This is the 70th most frequent Estonian word.
koos
"Koos" means "together" in English.
Here, 'koos' means 'together' and is used as an adverb to describe the action of studying.
Me õpime koos.
We study together.
In this sentence, 'koos' also means 'together' but is part of the phrase 'koos töötamine', referring to the act of working jointly with others.
Koos töötamine on alati lõbus.
Working together is always fun.
Here, 'koos' is used to mean 'with' to indicate accompaniment, emphasizing the presence of someone else along with the subject.