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

Alphabetic(al) abbreviation (or initial abbreviation, initialism) is a shortening which is read as a succession of the alphabetical readings of the constituent letters, e.g. BBC (British Broadcasting Corporation), EU (European Union), MTV (Music Television), VCR (video-cassette recorder).
Acronymic abbreviation (or acronym | Akronim]) is a shortening which is read as a succession of the sounds denoted by the constituent letters, i.e. as if it were an ordinary word, e.g. UNICEF (United Nations Children’s / formerly International Children’s Emergency / Fund), NATO (North Atlantic Treaty Organization), scuba (self contained underwater breathing apparatus).
Homoacronym is an acronym which coincides with an ordinary English word semantically connected with the thing, person or phenomenon whose name is abbreviated, e.g. ASH (Action on Smoking and Health), NOW (National Or­ganization for Women), WIN (Whip Inflation Now), ARISE (Associates for Research into the Science of Enjoyment), SCUM (self-centred urban male). Such acronyms may produce a humorous effect as in the last four examples.
Backronym or bacronym is a phrase specially constructed so that an ac­ronym fits an existing word. For example, NASA named its ISS treadmill the Combined Operational Load-Bearing External Resistance Treadmill (COLBERT) after Stephen Colbert. The backronym was a lighthearted compromise in recog­nition of the comedian's ability to sway NASA's online vote for the naming of an ISS module. Backronyms may be invented with serious or humorous intent, or may be a type of false or folk etymology.
Anacronym is an acronym which is no longer perceived by speakers as a shortening: very few people remember what each letter stands for in it. For example: radar - radio detecting and ranging; laser - lightwave amplification by stimulated emission of radiation.