Vocabulary

• helps you find the meanings of words and draw connections to associated words. You can easily see the meaning of each by simply placing the mouse cursor over it.
• a good resource for students who are stuck in the rut of using the same words and phrases repeatedly in their writing. 

You can enter an English word to see its collocations, each with an example sentences from the corpus (collection).

• see the overall frequency for each word
• for each word you can also find the 20-30 most frequent collocates (nearby words) and see 200 or more concordance lines (words in context)

OneLook's reverse dictionary lets you describe a concept and get back a list of words and phrases related to that concept. Your description can be a few words, a sentence, a question, or even just a single word. 

• The Academic Word List (AWL) is divided into 10 sublists of word families. Each of these sublists contains 60 words, except for sublist 10, which contains thirty words. 
• When studying the sublists, you should also attempt to learn the various derivations (the verb, noun, adjective and adverb forms + variants) for the word families given.

• over 500 gap-fill exercises to learn
• review over 1500 items of general vocabulary in English

• from Grammar-teacher.com

• instant feedback for every practice question you attempt
• optional competition aspect