I'd say the entire .*[zj]illion family means "more than a lot". :)
Prefixes to [zj]illion are added primarily for emphasis and syncopation. Order of magnitude takes a back seat to pure verbal esthetics.
Update: Who would waste a vote --'ing a joke? The words really are used to mean "a lot" with additional emphasis. Saying a "a kajillion hozillion" is just dialectical way of emphasizing "a great number".
There is so much good stuff on here to ++, I can't imagine why someone would -- a post that quibbles about word meaning.
Please don't -- me a kazillion times for whining here. :)
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