Regarding words that start with the same letter and mean the same thing in different languages, as long as you stay in the same language family, there are plenty.<p><a href="http://en.wikipedia.org/wiki/Mutual_intelligibility" rel="nofollow">http://en.wikipedia.org/wiki/Mutual_intelligibility</a><p><a href="http://en.wikipedia.org/wiki/Differences_between_Spanish_and_Portuguese" rel="nofollow">http://en.wikipedia.org/wiki/Differences_between_Spanish_and_Portuguese</a>