They may be small words, but conjunctions are highly functional and very important for constructing sentences. As you can see in the first sentence the coordinating conjunction “and” was used to link different parts of the sentence. This is the main job of conjunctions. Basically, conjunctions join words, phrases and clauses together.
The chart shown above is a list of some of the most commonly-used conjunctions.
YourDictionary also has articles describing each of the different types of conjunctions:
Remember, the main job of a conjunction is to link together different parts of a sentence.