This is the 2084th most frequent Arabic word.
بنية
Structure or building.
In this sentence, "بنية" is used to mean 'structure', specifically referring to infrastructure. The word is adapted to a compound form with "تحتية" to specify 'infrastructure'.
البنية التحتية للمدينة جديدة.
The city's infrastructure is new.
Here, "بنية" describes someone's physical build or constitution, indicating the strength or form of the body.
هذه الطفلة ذات بنية قوية.
This girl has a strong physique.
In this instance, "بنية" indicates the structure or organization, applied to the framework of a story.