Actually, Pro - it is indeed a coincidence. But before you read too much into it, remember that the Weak Law of Large Numbers pretty much guarantees that really weird stuff will continue to happen on a regular basis.
People freak out when someone wins the lottery jackpot twice in a lifetime, not realizing that it would be creepy if this never happened.
(Sorry: apparently the word 'coincidence' triggers some kind of mini probability rant)
Goddamnit. It seems like Papageno could have made the effort once in a while to offer a definition or citation for these most obscure words, instead of just going on some kind of mad listing binge.
Never fear. Moazogotl is an adjective*, and always modifies the word cloud. A Moazogotl cloud is a "cloud bank that is created under Föhn conditions on the lee side of a mountain".
I'm sure nobody needs to be reminded that a Föhn wind is a type of dry downslope wind which occurs in the lee of a mountain range. It is a rain shadow wind which results from the subsequent adiabatic warming of air which has dropped most of its moisture on windward slopes (orographic lift). As a consequence of the different adiabatic lapse rates of moist and dry air, the air on the leeward slopes becomes warmer than equivalent elevations on the windward slopes. Föhn winds can raise temperatures by as much as 30°C (54°F) in just a matter of hours. Central Europe enjoys a warmer climate due to them.