Coordinating Conjunctions (FANBOYS: for, and, nor, but, or, yet, so)
* For: I went to the store, for I needed milk. (reason)
* And: The sun was shining, and the birds were singing. (addition)
* Nor: He didn't study, nor did he attend the class. (negative addition)
* But: I wanted to go to the beach, but it was raining. (contrast)
* Or: Would you like coffee or tea? (choice)
* Yet: She was tired, yet she continued working. (contrast)
* So: I was hungry, so I ate lunch. (result)
Subordinating Conjunctions (examples: because, although, since, while, if, unless, until, after, before, etc.)
* Because: I went to bed early because I was tired. (reason)
* Although: Although it was cold, she wore a dress. (contrast)
* Since: Since you're here, let's have dinner. (time)
* While: While I was working, he was playing video games. (time)
* If: If you want to go, I'll go with you. (condition)
* Unless: I won't go to the party unless you go with me. (condition)
* Until: I'll stay here until you come back. (time)
* After: After I finished my work, I went home. (time)
* Before: I finished my homework before dinner. (time)
Correlative Conjunctions (pairs of words like: both...and, either...or, neither...nor, not only...but also)
* Both...and: Both John and Mary went to the party.
* Either...or: Either you can go to the movies or you can stay home.
* Neither...nor: Neither the dog nor the cat was home.
* Not only...but also: Not only is he talented but also he is very kind.
These are just a few examples. There are many other types and examples of conjunctions used in sentences.