No, the essences will be more like freeform traits, like "violent" or "generous". Before I started writing I thought I was going to take some inspiration from a previous game I've written where the traits all have a positive and negative aspect (an example from that game: the "genius" trait had the positive aspect "clever" and the negative aspect "arrogant"), but as I've been thinking about it I'm not sure if that will work. I realized today as I started writing the game that my ideas about how I want the mechanics to work are still pretty fuzzy.
I definitely have trouble with titles, and I may ask for suggestions later in the week, but I want to focus on my mechanics first.