While on the subject, now that I've stopped to smell the roses, rather than passing through and dropping a vote, I feel like going off on a ramble.
As odd as it may (or may not?) be, though semantics, I don't see "smart" the same as "intelligent" for the reason that I've always felt intelligence is only one part of three. The way I break down the issue of "smartness" or whatever you want to call someone's overall abilities is that there is intelligence, knowledge, and wisdom.
Intelligence for the most part would be your innate mental ability that isn't really learned or grown. Logical computation and reasoning abilities. Related to this is how IQ tests are full of basically irrelevant exercises that draw off experiences or learned information very little. To use a bad analogy, intelligence would be like a CPU's hertz, raw computational power.
Knowledge is everything you learn. The information you need to make use of your intelligence. You may be gifted at mathematics from birth, but until you pick up a text book and gain the knowledge of how math works you won't be solving anything.
Wisdom is a little harder for me to define, but basically being able to properly make use of your abilities. Knowing when to do or say what. In my view, this is the part that is the holy grail of AI, and the thing humans are still vastly superior to computers in.