Quite often, "i.e.," and "e.g.," are thought to be interchangeable. However, they do mean different things. So what is the difference and why aren't they synonymous? "i.e.," is the abbreviation for the Latin "id est," which translates as "that is." "e.g.," is the abbreviation of the Latin "exempli gratia," which means "for example." "i.e.," should be used when you want to clarify something by using different words. "e.g.," should be used when you simply want to give one or many examples of what you are expressing. See the sentences below to get a better understanding of the comparison.
The mall is packed with clothing stores, e.g., Nordstrom, Macy's, Cache, and Ann Taylor.
Today I'm going shopping at the best store in the city, i.e., Crate & Barrel.
Introduction to Grammar Guidelines
With texting, Facebook, and Twitter fast becoming main modes of communication, the new shorthand lingo that is developing will no doubt bring about a higher frequency of grammatical, spelling, and punctuation errors. The rules that define proper English seem to fade into the distance as more people forget them and replace that knowledge with acronyms such as OMG and LOL. The hope for this site is to reinforce proper English grammar and continue to encourage eloquent writing and speech.