Coordinating Conjunctions:
(for)
I must learn harder, for I will be failed this semester.
(nor)
I don’t like exercise, nor do I like to run.
(so)
I like eating, so I enjoy cooking.

Conjunctive Adverbs and Transitional Expressions:
(however)
I enjoy working; however, I don’t like working overtime.

Subordinating Conjunctions
(though)
Though I’m single, I’m not lonely.