This is the 5676th most frequent Turkish word.
projeler
"Projeler" means "projects" in English.
The word 'projeler' is used here as the subject of the sentence, referring to 'projects' in plural.
Projeler tamamlandı.
The projects are completed.
In this sentence, 'projeler' is used to indicate something that the speaker is engaged in performing, again pluralized to denote multiple projects.
Projeler üzerinde çalışıyorum.
I am working on the projects.
Here, 'projeler' signifies future initiatives or undertakings ('new projects') for which suggestions are awaited.