This is the 384th most frequent Urdu word.
یقینی
Certain; assured; definite.
Here, 'یقینی' is used as an adjective meaning 'certain'.
یہ یقینی ہے کہ وہ وقت پر پہنچے گا۔
It is certain that he will arrive on time.
Here, 'یقینی طور پر' means 'certainly' and is used as an adverbial phrase.
یقینی طور پر، یہ ایک اہم موقع ہے۔
Certainly, this is an important occasion.
In this sentence, 'یقینی' is part of a verbal phrase, in the role of 'to ensure'.