Conjunctions

A LIST OF CONJUNCTIONS Coordinating Conjunctions (there are seven): And Or But Nor So For Yet

Subordinating Conjunctions (these are only a few): After Because Once Though When Although Before Provided Till Whenever As Even If Since Unless Wherever As If Even Though So That Until Whether As Long As If That What While

Both coordinating conjunctions and subordinating conjunctions can join clauses.
EXAMPLES:

My sister drives a truck, and she smokes cigars.
(Two clauses joined by a coordinating conjunction form a compound sentence.)

Some people do not like Cecil because he never listens.
(Two clauses joined by a subordinating conjunction form a complex sentence.)

Although Milly is terrified of heights, she is an airline pilot, and she lives in a penthouse.
(Clauses joined by a combination of coordinating and subordinating conjunctions form a compound-complex sentence.)

A subordinating conjunction can appear at the beginning or in the middle of a sentence.
EXAMPLES:

After the movie started, more people came in. (Notice the comma separating the clauses) More people came in after the movie started. A subordinating conjunction causes the clause that it appears in to become dependent. In other words, it will be a sentence fragment unless it is joined to an independent clause.
EXAMPLES:

You are my favorite brother. (sentence) Even though you are my favorite brother. (fragment) Even though you are my favorite brother, I am going to tell Mom. (sentence) The owner is bigger than you. (sentence) Unless the owner is bigger than you. (fragment) You can sit on that car unless the owner is bigger than you. (sentence)

A LIST OF CONJUNCTIVE ADVERBS

Conjunctive Adverbs (these are only a few):
Accordingly Finally Hence Instead Now Nevertheless Until Now Also For Example However Likewise Of Course Next Still Anyway For Instance Incidentally Meanwhile On the Contrary Nonetheless Then Besides Further Indeed Moreover On the Other Hand Similarly Therefore