Here are the types of conjunctions:
1. Coordinating conjunctions: These join two words, two phrases or two clauses. These join the things that have the same status grammatically.
Examples are and, or, nor, for, but, yet, so.
1. I like cake and ice-cream.
2. The teacher is in the library or the classroom.

2. subordinating conjunctions: These join independent clauses to dependent clauses.
Examples are while, until, unless, although, since, if, because, whenever.
1. I will continue studying until I score well in the exam.
2. My brother cried when he got into Oxford.

3. Correlative conjunctions: These appear in pairs and work like coordinating conjunctions. These join the things that have the same status grammatically. These appear at different places in a sentence.
Examples are either-or, neither-nor, not only-but also,both-and.
1. She is both talented and polite.
2. Either Sneha or Asha will sing a song.