The "Flatheads", as "The Others" pejoratively call the Neanderthals (owing to their distinctive back-sloping foreheads), also have a far more limited vocal repertoire than The Others, and largely communicate instead via a gestural sign language, although spoken words are sometimes used to add emphasis to the gestures. Auel describes this language as being quite nuanced, especially as bodily posture, facial expression and other physical actions — in short, body language — can expedite and expand upon the basic vocabulary of the hand signals. A Cro-Magnon observing Ayla demonstrating a translation characterizes the language as dancelike and elegant.