This is the 1524th most frequent Chinese word.
設計
"設計" means "design."
In this sentence, '設計' ('design') is used as a noun referring to the design or plan of the building.
這個建築設計非常獨特。
This building's design is very unique.
Here, '設計' ('design') functions as a verb describing the action of creating a new mobile application.
他正在設計一個新的手機應用程式。
He is designing a new mobile application.
In this instance, '設計' ('design') is again used as a noun, referring to the design approach applied to the chair.