I like the colors/fonts they work well with each other, and I also like the simplicity of it.  Not an excessive amount of panning or zooming which is a plus. I would try to make a more stern connection between the definition and the your mention of the graffiti artist at the end.   I particularly liked the way you set up the definition and 'part of speech' parts of the prezi and how it zoomed in further on both words to read more.