Hi, NBCreman

When you say "words within words", are you speaking of agglutination, specifically? If not, I would think etymology would suffice.

EDIT: Oh, now that I've read Mav's post, I see that I completely misunderstood the question. How embarrassing .

SECOND EDIT: Wow, what a neat site I just found, looking for your answer: http://einstein.et.tudelft.nl/~arlet/puzzles/language.html
charlinkadery looks promising.