[[Gramps_5.1_Wiki_Manual_-_Reports_-_part_5#Graphs|Graphs]] reports are created in the in Graphviz format and then converted into graphical output running it through the Graphviz dot tool behind the scene.

[[Gramps_5.1_Wiki_Manual_-_Reports_-_part_8#Quick_Views|Quick Views]] are reports that are available in the context menu's menus of person, family, ... They maybe created by users, even with limited programming knowledge.