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In grammar, a conjunction (abbreviated CONJ or CNJ) is a part of speech that connects words, phrases, or clauses, which are called its conjuncts. That description is vague enough to overlap with those of other parts of speech because what constitutes a "conjunction" must be defined for each language .
One definition is based upon representing the grammar as a system of language equations with union, intersection and concatenation and considering its least solution. The other definition generalizes Chomsky's generative definition of the context-free grammars using rewriting of terms over conjunction and concatenation.
Conjuncts are conjoined by means of a conjunction, which can be coordinating, subordinating or correlative. Conjuncts can be words, phrases, clauses, or full sentences. [Gretchen and her daughter] bought [motor oil, spark plugs, and dynamite]. Take two of these and call me in the morning.
References on English usage strongly criticize the phrase as "ugly" [2] and "Janus-faced". [4] William Strunk, Jr., and E.B. White, in their classic The Elements of Style–recognized by Time one of the 100 best and most influential non-fiction books written in English since 1923, [6] say and/or is "A device, or shortcut, that damages a sentence and often leads to confusion or ambiguity". [3]
In classical logic, logical conjunction is an operation on two logical values, typically the values of two propositions, that produces a value of true if and only if ...
While is a word in the English language that functions both as a noun and as a subordinating conjunction.Its meaning varies largely based on its intended function, position in the phrase and even the writer or speaker's regional dialect.
The word is often used in reference to the Sun, Earth, and either the Moon or a planet, where the latter is in conjunction or opposition. Solar and lunar eclipses occur at times of syzygy, as do transits and occultations. The term is often applied when the Sun and Moon are in conjunction or in opposition . [4]
Conjunction may refer to: Conjunction (grammar), a part of speech; Logical conjunction, a mathematical operator Conjunction introduction, a rule of inference of propositional logic; Conjunction (astronomy), in which two astronomical bodies appear close together in the sky; Conjunction (astrology), astrological aspect in horoscopic astrology