Skyscraper と High-rise と Tower Block はどう違いますか？説明が難しい場合は、例文を教えて下さい。

Sky scrapers are really, really tall (figuratively scraping the sky) buildings normally for commercial use e.g. the Shard in London, Empire State Building in New York etc. Truly the tallest of the tall buildings. Sometimes they also are part residential, but rarely.

A high-rise is a building with more than 4 or 5 floors. Can be either residential or commercial. It just literally means “the building rises high above the ground”

Tower block is a high rise building used for housing. In the U.K. typically it refers to municipal (or ex-municipal) social housing built from the 1950s-1970s, but in theory refers to any residential building over a certain height. They’re usually not seen as nice buildings or nice places to live.