MLA considers anything other than a table a “figure”: photograph, drawing, chart, cartoon, map, etc.
Adapted from Joseph Garibaldi, MLA Handbook for Writers of Research Papers, 6th ed. (2003), pp. 134-37.

Fig. 1. The Iowa Caucus. Photograph by momaraman, 3 January 2008, from Flickr Creative Commons,
20 June 2008. http://farm3.static.flickr.com/2231/2191117996_4d9d875ce2.jpg?v=0

Fig. 2. 2007-2008 Writers Guild of America Strike, 7 November 2007, from Wikimedia Commons, 17 June 2008 http://upload.wikimedia.org/wikipedia/commons/b/be/Writers_Guild_of_America_strike.png