My cat doesn't trill and rarely growls.  However she does make a noise I'd never had a cat make before.

If she sees a strange cat outside she runs from window to window and makes a huffing kind of noise.  Huff.  Huff.  Huff.  It's as though she is so angry at the interloper venturing into her property that she can hardly get the words out to express her fury!  It's priceless.

Also, cats make many sounds we describe as a meow. but my current cat can enunciate every letter in the word....even the M.  She really does MEOW.