Improving vocabulary skills requires constant attention. Here, we'll give you a few tips for increasing vocabulary in specific subject areas through the use of a vocabulary tree.

1. Choose a subject area that interests you.
   
   
2. Write a short introduction to the subject trying to use as many vocabulary words concerning the subject as possible.
   
   
3. Using your introduction, arrange the principle ideas concerning the subject into a vocabulary tree.
   
   
4. To create a vocabulary tree, put the subject at the centre of a piece of paper.
   
   
5. Around the central subject, put the principle areas relating to the subject. For example - verbs, nouns, descriptive adjectives, etc.
   
   
6. In each of these categories, write the appropriate vocabulary. If you need to, add sub-categories.
   
   
7. Create the same vocabulary tree in your native language.
   
   
8. Your native language tree will be much more detailed. Use this native language tree as a reference point to look up new words and fill in your English tree.
   
   
9. Rewrite your introduction concerning the subject taking advantage of the new vocabulary learned.
   
   
10. To make this vocabulary active, practice reading your introduction aloud until you can present it by memory.
    
    
11. Ask a friend or colleague to listen to your presentation and ask you questions about the subject.