Style
Exempli gratia (e.g.) and id est (i.e.) are commonly confused and misused in colloquial English. The former, exempli gratia, means "for example", and is used before giving examples of something ("I have lots of favorite colors, e.g., blue, green, and hot pink"). The latter, id est, means "that is", and is used before clarifying the meaning of something, when elaborating, specifying, or explaining rather than when giving examples ("I have lots of favorite colors, i.e., I can't decide on just one").