Polyglot Charles Berlitz recounts the tale of a Portuguese gentleman who taught a thousand words of his native language to a French friend in less than a minute. He worked this minor miracle by explaining that “all the words in French that end in -tion in French are the same in Portuguese, except that they end in -ção, which you should pronounce as saong. There are more than a thousand of them, and they are all of the feminine gender, just like in French.”1
The same phenomenon appears in Spanish, Catalan, Italian, and Romanian. Indeed, it can be found in all modern languages of the Romance family.
1
Charles Berlitz Native Tongues (Edison: Castle Books, 2005) page 27
I wonder if there are other similar shortcuts to be found not only in Romance languages, but other language families in general? would probably be a good theme for a book or essay.