Учебное пособие в систематизированном виде содержит необходимые для изучения курса лексикологии английского языка вспомогательные материалы: планы семинаров, определения основных понятий и терминов на английском и русском языках, темы курсовых

Encyclopaedia, encyclopedia [in.saiklo'phdio] is a book or set of books giving information about every branch of knowledge, or about a particular sub­ject, with articles in alphabetical order.
Reference book is a book (an encyclopedia or a dictionary) which is con­sulted for information, not read right through, e.g. A Reference Grammarfor Students of English.
Vocabulary is:

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  The stock of words used or known to a particular person or group of persons, e.g. His English vocabulary is rather limited.
  
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  A list or collection of words and phrases, usually arranged in alphabeti­cal order and defined, e.g. the vocabulary of the unit.
  
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  The total number of words that make up a language, e.g. the English vocabulary.
  

Explanatory dictionary [ik'spl^n9t(o)ri] is a dictionary in which the en­try usually presents the following data: spelling and pronunciation, grammatical characteristics, meanings, illustrative examples, derivatives, phraseology, ety­mology, synonyms and antonyms, e.g. Longman Dictionary of Contemporary English.
Translation (bilingual, parallel) dictionary is a word-book containing vocabulary items in one language and their equivalents in another one.
Monolingual (unilingual) dictionary is a dictionary in which infor­mation is given in the same language, e.g. Webster’s New Encyclopedic Dic­tionary.
Polyglot (multilingual, polylingual) dictionary is a dictionary in which information is given in several languages (more than two), e.g. ABBYY Lingvo X5.
Glossary is:

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  A list at the back of a book of difficult and unusual words and expres­sions (with explanations of their meanings) used in the test, e.g. glossary to the book “Jane Eyre” by Ch. Bronte.
  
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  A list or dictionary of special terms found in a particular field of study or area of usage (with accompanying definitions), e.g. Glossary of Medical Terms, Glossary of Biological Terms.