1953년 발표한 Michael West의 General Service List를 업데이트한 버전이 두 개였네요.
Browne, Culligan and Phillips의 NGSL(http://www.newgeneralservicelist.org/)만 알고 있었는데요,
Brezina & Gablasova의 New-GSL도 있네요.
관련 논문은 Applied Linguistics 홈페이지: http://applij.oxfordjournals.org/content/early/2013/08/25/applin.amt018.full
New-GSL 단어목록은 http://applij.oxfordjournals.org/content/suppl/2013/07/21/amt018.DC1/new_GSL_alphabetical.docx
둘의 차이가 간단히 정리된 글입니다.
* 출처: http://en.wikipedia.org/wiki/General_Service_List
There are two major updates of the GSL: 1) the New General Service List (new-GSL) by Brezina & Gablasova published in Applied Linguistics in 2013. This wordlist is based on the analysis of four language corpora of the total size of over 12 billion words. 2) the New General Service List (NGSL), published in March 2013 by Browne, Culligan and Phillips. The NGSL was based on a 273 million word subsection of the 2 billion word Cambridge English Corpus. Preliminary results show that the new list provides a substantially higher degree of coverage with fewer words.