Back formation is the formation of a new word by subtracting a real or supposed suffix from the existing words: eg.butler- to butle. Back-formation is different from clipping – back-formation may change the part of speech or the word's meaning, whereas clipping creates shortened words from longer words, but doesnot change the part of speech or the meaning of the word
Вlendings is a specific type of shortenings, which implies «packing» of two meanings into one word. The process is also called telescoping because the words slide into one another like sections of a telescope (eg. smog - sm(oke) and (f)og). are the result of conscious creation of words by merging irregular fragments of several words which are aptly called “splinters.” 1 Splinters assume different shapes — they may be severed from the source word at a morpheme boundary as in transceiver (=transmitter and receiver), transistor (= transfer and resistor) or at a syllable boundary like cute (from execute) in electrocute, medicare (from medical care), polutician (from pollute and politician) or boundaries of both kinds may be disregarded as in brunch (from breakfast and lunch), smog (from smoke and fog), ballute (from baloon and parachute), etc. Many blends show some degree of overlapping of vowels, consonants and syllables or echo the word or word fragment it replaces. This device is often used to attain punning effect, as in foolosopher echoing philosopher; icecapade (= spectacular shows on ice) echoing escapade; baloonatic (= baloon and lunatic).
Blends are coined not infrequently in scientific and technical language as a means of naming new things, as trade names in advertisements. Since blends break the rules of morphology they result in original combinations which catch quickly. Most of the blends have a colloquial flavour.
