el girasol - sunflower
  la grulla - crane (type of bird)
  el gaucho - gaucho (the \"cowboy\" of Argentina,...
  la gaviota - seagull
  el guajolote - turkey
  gualdo - yellow, golden
  guapo - good-looking, attractive, handsome,...
  el guardabosque, la guardabosque - forest ranger, park ranger
  gafe - jinxed
  la gala - big show (often one put on for...
  la gomina - gel (especially hair gel)
  el germen - germ (in most usages)
  la granada - pomegranate, grenade
  el glaciar - glacier
  la falocracia - male chauvinism, male-centered...
  el ferrocarril - railroad, railway, train
  fullero - cheating, dishonest, deceptive,...
  el forro - cover of a book, lining of clothing,...
  la franela - flannel
  la fila - line or row (of objects or people)