Vocabulary as an indicator of intelligence
An increased vocabulary is one of the best general indicators of intelligence. The vocabulary difference between low- and high-achieving students is estimated to be approximately 5000 words. This difference typically has more to do with the student’s regular exposure to new words than their so called innate intelligence. Therefore, building your language knowledge with vocabulary activities can lead to increased intelligence, and a higher IQ score, as well as improved academic success.
A limited Vocabulary indicates a limited Mind.
Ideas are words , and words ideas , a low vocabulary thus clearly indicates a lack of ideas. a limited vocabulary places limits on our understanding. A lack of vocabulary impedes communication and reception of ideas through language and therefore impedes area of mature and critical thought. For this reason, vocabulary is one of the main ingredients in intelligence tests. These are formal measurements, and a person is not necessarily more intelligent because he has had more formal education; we learn most of our vocabulary through other means than formal studies in educational institutions.
Varieties of experiences are important elements in expanding your vocabulary and understanding
The more you read, the more you study the arts and sciences, the more you work with car motors or radios or music or any other field of activity, the more you automatically pick up their terminology; therefore, a mature person whose vocabulary is quite limited is likewise limited in the scope of his her interests and accordingly may appear limited in intelligence.
As I say a person who has never tasted a Cassata will never dream of putting layers of ice cream and cake and ice cream and cake in a pressure cooker.