vast
The German word 'umfangreich' is used to describe something that is extensive, comprehensive, or vast in size or scope. It can be used to describe a wide range of things, from the vastness of the universe to the extensive range of a company's products. It is an adjective and is often used to modify nouns.
The extensive library has over a thousand books.
In this sentence, 'umfangreich' is used to describe the size or scale of the library. It indicates that the library has a large collection of books.
He conducts extensive research in his field.
Here, 'umfangreich' is used to emphasize the depth and width of the research that the person is conducting in their field.
The extensive menu offers a variety of options.
In this instance, 'umfangreich' is used to describe the variety and number of options available in the menu.