Latest Age To Start Talking

What is the latest age for kids to start talking? My dotter is 2 years old. Her motor skills and balancing skills are great, and to me, Amazing! She is very observant, follows instructions and pretty cautious of her surroundings. But she still have not spoken one proper word. Not even mom or dad. Should i be worried? Because I am. Also because our families kept asking if she had started talking. My kid just makes sounds. She can do matching printables like matching colours and shapes, matching continents of the world, arrange numbers. And we always keep talking to her, keep talking in full sentences. Is it really different kid develops differently?