Eikon, an image: iconoclast.
Electron, amber; electricity.
Ergon, a work; surgeon [= chirurgeon], energy.
Eu, well; eucharist, euphony, evangelist.
Gamos, marriage; bigamy, monogamist, misogamy.
Gē, the earth; geography, geometry, geology.
Gennao, I produce; genesis, genealogy, hydrogen, oxygen.
Grapho, I write; gramma, a letter; graphic, grammar, telegraph, biography, diagram.
Haima, blood; hæmorrhage, hæmorrhoid.
Haireo, I take away; heresy, heretic.