A conjunction is a word or a phrase that joins together words or sentences. These words act as cohesive devices and help us form a complex grammatical structure of a sentence. Example: Peter could not win though he gave it his best shot.
In the English language, there are three basic kinds of conjunctions:
1. Coordinating Conjunctions are those that are used to join two statements of equal importance. These conjunctions are placed in between the words or groups of words that they link together, and not at the beginning or at the end.
Example: Pizza and burgers are my favorite snacks.
Coordinating Conjunctions are further divided into four kinds: Cumulative, Alternative, Adversative and Illative.
2. Subordinating Conjunctions are those that are used to join two sentences or two clauses of unequal rank. The first one is the main clause while the second one is the subordinate clause which depends on the main clause. These conjunctions also describe the relationship between the dependent clause and the independent clause in the sentence.
Example: Make hay while the sun shines.
3. Correlative Conjunctions are those that are always used in pairs and denote equality; and show the relationship between ideas expressed in different parts of a sentence - and thus make the joining tighter and more emphatic.
Example: We can visit granny either tomorrow or the day after.