This is the 5677th most frequent Turkish word.
projelerin
"Projelerin" means "your projects" or "the projects of yours" in English.
The word 'projelerin' ('your projects' or 'the projects of') functions as the possessor in this sentence, indicating whose projects are being referred to.
Projelerin başarılı bir şekilde tamamlanması çok önemlidir.
Completion of projects successfully is very important.
Here, 'projelerin' ('the projects') serves as the subject for the possession structure, pointing to the projects requiring additional work.
Projelerin üzerinde daha fazla çalışmamız gerekiyor.
We need to work more on the projects.
In this sentence, 'projelerin' ('your projects') establishes possession, linking the projects to 'you' (second person singular).