Summary is a short statement of the main points or a comprehensive and brief abstract, recapitulation, or compendium of previously stated facts or statements.
Hierarchical outline is a list arranged to show hierarchy and relationships and is a type of tree structure.
General outline is a summary or overview of a subject.
is a simple series of words, numerals, and other items, written or
printed together in a meaningful grouping, sequence, or arranged
according to some system to constitute a record.