Nouns

(n)summary, sum-upa brief statement that presents the main points in a concise form“he gave a summary of the conclusions”

Adjectives

(s)drumhead, summaryperformed speedily and without formality“a summary execution”, “summary justice”
(s)compendious, compact, succinct, summarybriefly giving the gist of something“a short and compendious book”, “a compact style is brief and pithy”, “succinct comparisons”, “a summary formulation of a wide-ranging subject”