• Computational Linguistics
  • AI
  • Natural Language Processing
  • Books and papers dealing with
    • Machine Translation
    • Text to Speech software
    • algorithms to parse sentences
• Historical Linguistics
  • Comparative Historical Linguistics
  • Genetic Classification,
• Lexicography
  • a bilingual dictionary
  • a collection of legal terms in a particular language
  • Books and papers about creating dictionaries
  • Swadesh word lists
• Phonetics
  • A sound inventory of a language
  • a study of the variation of articulation of a particular sound
• Phonology
  • Phonological theories applied to a particular language
    • a study of the syllable structure of a language or the rules behind sound alternations.
• Semantics
  • A paper on color lexemes in a particular language
• Syntax
• Typology
• Writing Systems

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• Second Language Teaching
• Pragmatics
  • A study of politeness phenomena, honorifics, deixis or speech acts.
• Text and Corpus Linguistics
  • A statistical analysis of the British National Corpus, on the use of modal verbs in spoken and written English.
• Translation
  • A study of the relative merits of different levels of translation (that is, literal translation, word-for-word translation and so on).

Source taken from: http://www.linguistlist.org/LL/LingSubfields.cfm