Register analysis focuses on lexico-grammar of a text and always concentrates on the stylistic features of it; while genre analysis takes text structure as its target.
换言之，语域分析回答了一篇文章是“如何”安排的问题，语类分析解决的是“为什么”要这样安排的问题。
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This paper tries to discuss the structural organization and the lexico-grammatical encoding of a particular genre, the letter of application, from the perspective of Systemic Functional Grammar.
本文尝试从系统功能语言学的基本观点，对求职信这一特殊语类进行讨论和研究。
词源
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lexico-:
From Ancient Greek λεξικ?? ?(leksikós, “of words”), from λ?ξι? ?(léksis, “a saying, speech, word”), from λ?γειν ?(légein, “to speak”).