Conjunctions- are words that join other words, phrases, or clauses, and they indicate the relation between the elements joined. 

Coordinating Conjunctions- are used to connect ideas of equal importance in a sentence (and, but, or, nor, for, so, yet). 

Example: Parallel ideas linked by Coordinating Conjunction

At Lincoln High School, vandalism can result in suspension or even expulsion from school. 

When a coordinating conjunction is linking independent clauses it is preceded by a comma. 

Example:

Everyone has heard of love at first sight, but I fell in love at first dance. 

Correlative Conjunctions- pair grammatically equal elements and they come in pairs.

Either…or

Neither…nor

Not only…but also

Whether…or

Both…and 

Example: Correlative Conjunctions

Thomas Edison was not only a prolific inventor but also a successful entrepreneur.  

Subordinating Conjunctions- introduce subordinating clauses and indicates its relation to the rest of the sentence (after, although, as, as if, because, before, even though, how, if, in order that, once, rather than, since, so that, than, that, though, unless, when, where, whether, while, why). 

Conjunctive Adverbs- are used to indicate the relation between two independent clauses (accordingly, also, anyway, beside, certainly, consequently, conversely, finally, furthermore, hence, however, incidentally, indeed, instead, likewise, meanwhile, moreover, nevertheless, next, nonetheless, once, otherwise, similarly, specifically, still, subsequently, then, therefore, thus).  

When a conjunction adverb is found in the middle or at the end of the second independent clause, the semicolon goes between the two clauses.  

Example: Conjunctive Adverbs

Most singers gain fame through hard work and dedication; Evita, however, found other means.