la ecuación - equation
  la guerra - war, struggle, conflict
  inalámbrico - cordless, wireless
  proscrito - banned, banish, proscribed
  el franqueo - postage
  el filo - edge (especially of something, such...
  el bufón, la bufona - buffoon, silly person, stupid person,...
  la cuneta - ditch, gutter, curb
  el cacahuete - peanut (the plant, its fruit or its...
  transpiración - perspiration, transpiration...
  la fecundidad - fertility, productivity, fecundity
  la ficha - token (such as one representing...
  el fideo - noodle
  el folio - page, sheet of paper, folio
  la hecatombe - catastrophe, carnage, disaster
  grasiento - greasy, oily
  perspicaz - perceptive, having keen eyesight,...
  la masa - mass (in physics), large quantity,...
  el viento - wind, guy rope, course or bearing...
  el retrato - portrait, photograph, image,...