A word which is used to join two words, group of words or sentence is called a conjunction
Examples
1.Alex and Robin are playing together.
2. Alex plays well, but Robin plays better than him.
3. I play cricket, and Robin plays football.
4. When he was sick, I went to see him.
Types of Conjunction
1. Co-ordinating Conjunction.
2. Subordinating.
3. Correlative Conjunction
Co-ordinating Conjunction
A co-ordinating conjunction joins together clauses of equal rank.
Examples
and, but, also, or, for, so, yet, either....or, both...and, not only...but also.
1. We went to the stadium and enjoyed the cricket match.
2. Do you want an ice cream or chocolate?
3. Go away and never come back.
Subordinating Conjunction
A subordinating conjunction joins elements of an unparallel sentence structure. These elements are usually a dependent clause and an independent clause.
Examples
After, how, than, when, although, if, that, where, as, in order that, though, which, as much as, inasmuch as, unless, while, because, provided, until, who/whom, before, since, what, whoever/whomever.
1.Before we left home, I had had my breakfast.
2. Provided they come, we can start class Tuesday.
3. When he was washing my car, I went to the store.
4. Even though the weather was horrible, they still went outside.
Conjunction which are thus used in pairs are called correlative conjunction.
Examples
either...or, neither...nor, both...and, not only...but also, whether...or, thought...yet.
1. Both Joey and Sam completed his part of the project.
2. Either the doctors or the nurses will visit their patients at least once a day.
3. Not only the painting but also the sculptures show their unique style when put on display.