"A high-rise building is a tall building, as opposed to a low-rise building and is defined differently in terms of height depending on the jurisdiction. It ...
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is used as a residential, office building, or other functions including hotel, retail, or with multiple purposes combined. Residential high-rise buildings are also known in some varieties of English, such as British English, as tower blocks and may be referred to as "MDUs", standing for "multi-dwelling unit".[full citation needed] A very tall high-rise building is referred to as a skyscraper.
High-rise buildings became possible with the invention of the elevator (lift) and less expensive, more abundant building materials." - (en.wikipedia.org 16.05.2021)