As a verb:
* The small country annexed the neighboring territory, expanding its borders significantly.
* The company annexed the building next door to accommodate their growing workforce.
* After the war, the victorious nation annexed the defeated country's key industrial areas.
As a noun:
* The new annex added an extra 2,000 square feet of space to the school.
* We stored our camping gear in the annex of the garage.
* The library's annex houses the special collections, including rare books and manuscripts.
More examples:
* The historic building was annexed to the museum, becoming a valuable addition to its exhibits.
* The treaty allowed for the peaceful annexation of the disputed territory.
* The building's annex is used as a meeting room and a storage space.
* The family annexed the porch to create a sunroom for their home.