Word associations are created by participants who are asked the first word (response) that comes to their mind when presented a word (stimulus). For example, given the stimulus
BOOK, they might answer
PAGE. Each participant is asked to produce only a single associate to each word, but the databases show the aggregated results of many participants.
You can query two databases of word association norms:
http://www.eat.rl.ac.uk/) for querying the associations is not available anymore, but the original association data is still available in json format. There are 8 210 different stimuli, including some numbers and expressions.
After choosing the association database with the radio-button, a stimulus word can be typed in the text box below and the responses are displayed in the table on the right with the number of persons who gave it as answer. The table on the left are the stimuli that would give the word in the box as response. The total number of stimuli/response is displayed in the title of the column. Clicking one of word in the stimuli or responses table, inserts it in the query box.