This is the 128th most frequent Azerbaijani word.
olması
"Olması" means "its being" or "the condition of being" in English.
In this sentence, 'olması' highlights the state of being in the role of a leader for 'onun' ('his').
Onun lider olması komandaya çox faydalıdır.
His being a leader is very beneficial for the team.
Here, 'olması' denotes the quality of the activity being secure or safe.
Bu havada fəaliyyətin təhlükəsiz olması vacibdir.
In this weather, it's important for the activity to be safe.
In this context, 'olması' refers to the attribute of the place being beautiful, which serves as an attraction for tourists.