The total number of words among the three sets of vocabulary was 9,108, while their
overlap consisted of 1,798 words. Out of these 1,798 words, 535 words do not appear in JSH
textbook vocabulary. Assuredly, then, these 535 words may be considered as being the most
important words needing to be acquired for an adequate comprehension of Business English,
considered from the standpoint of authentic business communications, educational business
texts, and tests for measuring communication skills. Excluding JSH vocabulary, the most
frequently appearing 100 business-oriented words common to the three business-oriented
vocabularies are attached in the Appendix.