What are Conjunctive Adverbs?

How are semicolons and conjuctive adverbs connected?
http://writing.wisc.edu/Handbook/Semicolons.html

When do you use a conjuctive adverb?
http://grammar.yourdictionary.com/parts-of-speech/adverbs/list-of-conjunctive-adverbs.html


http://writing.wisc.edu/Handbook/ConjAdv.html

Let's try it out!
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-82950.php