You can always get to this page by clicking this icon above.
You can enter any text that you would like in the form at the left
-- for example, a paper that you've written, or a newspaper article that you've
copied from another website. After inputting the text,
you can then see useful information about words and phrases in that
text, based on data from COCA.
First, it will highlight all of the medium and
lower-frequency words in your text and create lists of these words
that you can use offline. This frequency data can help
language learners focus on new words, and it can allow you to see
"what the text is about" (i.e. text-specific words).
Second, you can click through the words in the text
to see a detailed "word sketch" of any of the words -- showing their
definition and their translation (in more than 100 languages); links to pronunciation, images, and videos; related topics, collocates, "clusters" (2, 3, and 4-word phrases); and concordance lines.
Finally, you can do powerful searches on selected phrases in
your text, to show related phrases in
COCA. In this way, this resource is like a "collocational
thesaurus" to see what related phrases are most likely in
different styles of English.
Just enter some text, and there will be more help files on the next page.