Infoposters Are Not Infographics, by UnderstandingGraphics.com
“The infographic or information graphic is a visual representation of information, data or knowledge. In an infographic, a mark, a symbol or visual element typically stands for quantitative information. Color, size and shape usually provide the qualitative aspect. Infographics use text as labels and for short explanations to make the data useful. Think of charts, diagrams, graphs, maps, timelines and modern visualizations that aren’t yet named.”
"The infoposter, a category name that seems to fit this type of graphic, is not yet defined in Wikipedia. Yet it is probably safe to say that the infoposter is a graphic that conveys multiple segments of information typically using words and numbers to represent quantitative data. Infoposters generally use iconic-type graphic elements for visual design appeal and are typically vertical in orientation, similar to a wall poster. They are meant to be read, usually from top to bottom.”
Right on the money!