Nice overlap for the water category with Who, and the shift of meaning for POOL between categories is a nice touch. Didn't get the HAPTIC category, but seems legit. Also didn't get the ZODIAC category, and that one is actually especially tough---I'm not entirely sure how gettable it is. With the letters being internal rather than on the ends, and not particularly striking letters on their own, it may be a little too loose/hidden for me, personally. I'm also not sure what ZODIAC itself is meant to contain, is that just IA rather than a traditional intelligence agency?