LIST: Choose this option to see a listing of each individual word or string that matches the query, as well as collocates (nearby words). (More information on types of search strings).
CHART: This option presents "bar charts" that indicate the overall frequency for all matching words or phrases in each section of the corpus. This is probably the best option for comparing between different genres (spoken, magazines, etc), or to compare time blocks since 1990. (Example of chart display)
KWIC (Keyword in Context): The default view here is the traditional "concordance" view, with the word or phrase surrounded by sortable context to the left and right. You can also use this to skip the frequency or chart display and go directly to the "Keyword in Context" display.
COMPARE WORDS: This allows you to compare the collocates (nearby words) for two different words, such as small / little, or start / begin, which provides insight into the difference in meaning or use of these two words. (More information on word comparisons).