Abstract (summary), a summary means to write something in short like shortening a passage or a write up without changing its meaning but by using different words and sentences.Abridgement, the act of reducing a written work, typically a book, into a shorter form.Executive summary, a short document or section of a document, produced for business purposes, that summarizes a longer report or proposal or a group of related reports, in such a way that readers can rapidly become acquainted with a large body of material without having to read it all.Summary (law), which has several meanings in law.