TAT-1/ TAT-2 & TET-2 Online Test-67

 TAT-1/ TAT-2 & TET-2 Online Test-67

Compound (linguistics)

In linguistics, a compound is a lexeme (less precisely, a word or sign) that consists of more than one stem. Compounding, composition or nominal composition is the process of word formation that creates compound lexemes. Compounding occurs when two or more words or signs are joined to make a longer word or sign. A compound that uses a space rather than a hyphen or concatenation is called an open compound or a spaced compound; the alternative is a closed compound.

The meaning of the compound may be similar to or different from the meaning of its components in isolation. The component stems of a compound may be of the same part of speech—as in the case of the English word footpath, composed of the two nouns foot and path—or they may belong to different parts of speech, as in the case of the English word blackbird, composed of the adjective black and the noun bird. With very few exceptions, English compound words are stressed on their first component stem.

As a member of the Germanic family of languages, English is unusual in that even simple compounds made since the 18th century tend to be written in separate parts. This would be an error in other Germanic languages such as Norwegian, Swedish, Danish, German and Dutch. However, this is merely an orthographic convention: As in other Germanic languages, arbitrary noun phrases, for example "girl scout troop", "city council member", and "cellar door", can be made up on the spot and used as compound nouns in English too.

The process occurs readily in all Germanic languages for different reasons. Words can be concatenated both to mean the same as the sum of two words (e.g. German: Pressekonferenz, lit. 'press conference') or where an adjective and noun are compounded (e.g. Danish: hvidvinsglas, lit. 'white wine glass'). This can create a plethora of large, but valid words in these languages, by compounding compound words with several more.

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The addition of affix morphemes to words (such as suffixes or prefixes, as in employ → employment) should not be confused with nominal composition, as this is actually morphological derivation.

Some languages easily form compounds from what in other languages would be a multi-word expression. This can result in unusually long words, a phenomenon known in German (which is one such language) as Bandwurmwörter or tapeworm words.

Sign languages also have compounds. They are created by combining two or more sign stems.

Formation of compounds

Compound formation rules vary widely across language types.

In a synthetic language, the relationship between the elements of a compound may be marked with a case or other morpheme. For example, the German compound Kapitänspatent consists of the lexemes Kapitän (sea captain) and Patent (license) joined by an -s- (originally a genitive case suffix); and similarly, the Latin lexeme paterfamilias contains the archaic genitive form familias of the lexeme familia (family). Conversely, in the Hebrew language compound, the word בֵּית סֵפֶר bet sefer (school), it is the head that is modified: the compound literally means "house-of book", with בַּיִת bayit (house) having entered the construct state to become בֵּית bet (house-of). This latter pattern is common throughout the Semitic languages, though in some it is combined with an explicit genitive case, so that both parts of the compound are marked.

 

Agglutinative languages tend to create very long words with derivational morphemes. Compounds may or may not require the use of derivational morphemes also. In German, extremely extendable compound words can be found in the language of chemical compounds, where, in the cases of biochemistry and polymers, they can be practically unlimited in length, mostly because the German rule suggests combining all noun adjuncts with the noun as the last stem. German examples include Farb­fernsehgerät (color television set), Funk­fernbedienung (radio remote control), and the often quoted jocular word Donau­dampfschifffahrts­gesellschafts­kapitänsmütze (originally only two Fs, Danube-Steamboat-Shipping Company captain['s] hat), which can of course be made even longer and even more absurd, e.g. Donau­dampfschifffahrts­gesellschafts­kapitänsmützen­reinigungs­ausschreibungs­verordnungs­diskussionsanfang ("beginning of the discussion of a regulation on tendering of Danube steamboat shipping company captain hats") etc. According to several editions of the Guinness Book of World Records, the longest published German word has 79 letters and is Donau­dampfschiffahrts­elektrizitäten­hauptbetriebswerkbau­unterbeamten­gesellschaft ("Association for Subordinate Officials of the Main Electric[ity] Maintenance Building of the Danube Steam Shipping"), but there is no evidence that this association ever actually existed.

In Finnish, although there is theoretically no limit to the length of compound words, words consisting of more than three components are rare. Even those with fewer than three components can look mysterious[clarification needed] to non-Finnish speakers, such as hätäuloskäynti (emergency exit). Internet folklore sometimes suggests that lentokone­suihkuturbiinimoottori­apumekaanikko­aliupseerioppilas (Airplane jet turbine engine auxiliary mechanic non-commissioned officer student) is the longest word in Finnish, but evidence of it actually being used is scant and anecdotal at best.

Compounds can be rather long when translating technical documents from English to some other language, since the lengths of the words are theoretically unlimited, especially in chemical terminology. For example, when translating an English technical document to Swedish, the term "Motion estimation search range settings" can be directly translated to rörelse­uppskattnings­sökintervalls­inställningar, though in reality, the word would most likely be divided in two: sökintervalls­inställningar för rörelse­uppskattning – "search range settings for motion estimation".