What if words evolved in species and genera just like birds and dinosaurs? What if you classified them in kingdoms and families? Made a phylogenetic tree with orders of Space, Matter, or Intellect. Gravity and Levity as classes of Matter. With Density, Rarity, Pungency, Ululation. Would this matter taxonomy speak of the out-there, the non-human? Or the in-here the human mind, the sorting, reasoning human homo linguis the word maker, the world maker? Formally innovative, Matter explores Roget's taxonomy, rummaging its taint of globalism and social Darwinism, unearthing relations between humans, language and the planet. Matter asks what if words are so many birds, chirping and chattering? What is thought? What is knowledge? What's your life list of words?