So the rules are to "act out a series of words and phrases using body language" and not let's play charades.
It looks like the producers didn't want much of the stock charades gestures like the number of words, syllables, tugging the ear for "sounds like." About the only standard gestures were man, woman, and star. Other than no sounds and no props -- which they allowed a tiny bit of latitude on -- do we have any insight on how they were coaching the contestants and celebrities?
And one follow-up since we are talking about the show ... were there any backstage glimpses of the contraption that displayed the words? It seemed unnecessarily noisy for what it's purpose was (unless maybe that was seen as intentional to give an audio cue), especially since they very easily could have used the chyron. I guess since the pilot they used the chyron for the puzzle board, they opted to make the word display mechanical, and stayed with that. But once they went to series, everything was mechanical, even the clock and the bonus round money appeared to be keying a physical display.