This is the 340th most frequent Urdu word.
تحقیق
Investigation, research, or inquiry.
In this sentence, 'تحقیق' is used as a noun to describe the investigative process.
تحقیق ایک مشکل اور محنت طلب عمل ہے۔
Research is a difficult and demanding process.
In this sentence, 'تحقیق' is used as a subject noun to highlight the work done that led to discoveries.
ہماری تحقیق نے نئے علوم کے دروازے کھول دیے۔
Our research opened the doors to new knowledge.
Here, 'تحقیق' is part of a verb phrase to explain the act of engaging in research.