Read the following passage. Then fill in the diagram with the information that you read.
Communication between humans is largely based upon language.
Learning a new language involves many different processes. One step is to learn and build a vocabulary. Vocabulary is comprised of the different words used by speakers to express themselves. Linguists recognize two different type of vocabulary: passive and active.
The term passive vocabulary refers to the set of words that one has learned or is familiar with. Words that comprise a person's passive vocabulary are used infrequently for several reasons.
First, their definitions are not always completely known. In other cases, speakers avoid certain words or terms that they do not need to use often in conversation.
For most people, their passive vocabulary is much larger than their active vocabulary. This is because passive vocabulary continues to expand throughout a person's lifetime.
Active vocabulary is the set of words that a person can produce, such as when speaking or writing. Many linguists agree that a person's active vocabulary is usually smaller than his or her passive vocabulary. This is because words are only added to the active vocabulary as they are needed. In other words, a person will not add a word to active vocabulary unless he or she needs it to communicate.
linguist : a scholar who studies language
passive : not actively in use
avoid : to stay away from
lifetime : a period of time that someone lives
produce : to make something
Q> The word expand in the passage is closest in meaning to