<p>You are correct, there is an element of luck involved in intelligence. Some people have come across meaningful information by chance, others have not.</p>
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<p>Are you implying that knowing fourteen different synonyms for the same word is meaningful information?</p>
<p>First of all, IQ Tests are not very valid because test makers can also make mistakes. Second, IQ determines the capacity you have for learning. You can have a very very high IQ, but not care about school or grades at all. This would not qualify you for college admission.</p>
<p>^^Yes it is important. One word is more precise than the other for a certain situation. The ability of articulation is huge.</p>