Subheadings break down long segments into more manageable pieces and serve as guideposts for the reader. Anything not a table is called a figure. Place numbers and titles above tables and below figures. Tables present information in columns and rows. Graphs simplify statistical data.
Line graphs show trends or relationships.
Bar graphs compare separate items. Pie charts show different values as part of a whole. Illustrations include photographs and line drawings. Chart is a catch-all term for many kinds of visual aids. Charts represent visually the organization of something such as a process or corporation.