different between zesty vs pizazzy

English

zest +? -y

zesty (comparative zestier or more zesty, superlative zestiest or most zesty)

pizazz +? -y

pizazzy (comparative pizazzier or more pizazzy, superlative pizazziest or most pizazzy)

(informal) Of, characterized by, or exhibiting pizazz.
- 2008, Barbara Lippert, "You Call That Groundbreaking?," Adweek, 26 May (retrieved 8 Jan. 2009):
  To make the cereal brand seem sexier and more exciting, the campaign renamed the dull old shredded wheat squares as punchy, pizazzy "New Diamond Shreddies."

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