Conjunctions join words or groups of words together. The most commonly-recognized conjunctions are ‘and’, ‘or’, and ‘but’.

Susan filled out the application and mailed it yesterday.
Miss Johnson can not decide look for a job or join the Peace Corps after she graduates from  college.
Harry doesn’t really like broccoli but he eats it anyway because it’s good for his health. 

There are three types of conjunctions- Coordinating, Subordinating and Correlative

Coordinating Conjunctions

Coordinating conjunctions are used to connect two independent clauses.

Mr. Larson was very sleepy, but he stayed up to watch the baseball games on TV.

     List of coordinating conjunctives

for        and      nor       but       or         yet       so

Subordinating Conjunctions

Subordinating conjunctions are words at the beginning of a dependent clause and are used to connect an independent clause to a dependent clause. The subordinating conjunction may appear at the beginning of a sentence or at the end of a sentence.

After Sarah fninished her homwework, she played games on her computer.

Below is a partial list of subordinating conjunctions.

     after      although      because      before          since          so that

    until        while        when             whenever   wherever

Correlative Conjunctions

Correlative conjunctions are coordinating conjunctions paired with other words that work together to join two similar or contrasting thoughts together. The second word of each conjunctive pair is a coordinating conjunction.

The four most common correlative conjunctions are:

both… and      not only… but also      either… or       neither… nor

Money people have goals of obtaining  both money and power.
My sister is not only intelligent but also beautiful.
Paul likes neither friuts nor vegetables.
A person who wins a lottery can either get a large lump sum, or smaller yearly sums.

For more information about conjunctions and their use take a look at

The Basics of English Grammar

Other links for Conjunctions
XX Kinds of Conjunctions
XX Function of Conjunctions
XX Coordinating and Subordinating Conjunctions

An explanation of the three types of conjunctions- coordinating conjunction, subordinating conjunction and coorelative conjunction, with examples of conjunctions–