ge, the earth—geography, geology, geological, geometry, George, apogee, perigee.
gen'naein, to produce—genealogy, genesis, heterogeneous, homogeneous, hydrogen, nitrogen, oxygen.
gignos'kein, to know—diagnosis, diagnostic, prognosticate.
glos'sa, glot'ta, the tongue—glossary, glottis, polyglot.
glu'phein, to carve—hieroglyphics.
gno'mon, an indicator—gnomon, physiognomy (phusis).
go'nia, a corner—diagonal, heptagon, hexagon, octagon, trigonometry.
gum'nos, naked—gymnasium, gymnast, gymnastics.
hai'rein, to take or choose—heresy, heretic, heretical.
harmo'nia, a fitting together—harmony, harmonious, harmonize, harmonium.