Your receptive vocabulary is 21100 word families. Your attention index is 85%. You checked the following non-words: zeroninese, kratonol. Comparison with native speakers You result is better than 97% respondents. On the following histogram, which shows a distribution of results obtained so far, the dark blue area is proportional to the number of test takers with vocabulary smaller than yours. Isn't "zeroninese" a maths term about zeros and "kratonol" something related to karate?