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

Etymological dictionary is a dictionary which traces present-day words to the oldest forms of these words and in case of borrowings points out the source of borrowing, e.g. Etymological Dictionary On-line www.etymonline.com
Diachronic dictionary is a dictionary which reflects the development of the vocabulary by recording the history of form and meaning for every word registered. The arrangement of words here is chronological; the etymology if the word is given and exhaustive treatment; the history of the word’s forms and meanings is illustrated by quotations from the works of different periods and ac­companied by dates, e.g. The Oxford English Dictionary.
Synchronic dictionary is a dictionary concerned with present-day form, meaning and usage of words, e.g. The Longman Dictionary of Contemporary English.
Concordance [kon'ko:d(9)n(t)s] is a list of all the words which are used in a particular book or in the works of a particular author, together with the context in which each word occurs (usu­ally not including highly frequent grammatical words such as articles and prepositions), e.g. The concordance of Shakespeare, the Concordance of the Bible.

Pronouncing dictionary is a dictionary recording contemporary pronunciation.

http://www.concordancesoftware.co.uk/ webconcordances/
Reverse (reverse-order, rhyming, back-to-front) dictionary is a list of words in which headwords are arranged in alphabetical order starting with their final letters.
http://www.rhymer.com/
http://www.rhymer.com/RhymingDictionary/ moon.html


Learner’s dictionary is a dictionary compiled for foreign language learners.
Usage dictionary is a dictionary concerned with usage problems, e.g. An A-to-Z Guide to Grammar and Correct Usage.