A clause is a sentence or part of sentence which has verb in it. For example- Ramesh is eating an apple is a clause.
Types of clauses are-
1. Main clause/Independent clause
2. Subordinate clause/Dependent clause
3. Conditional clause
4. Relative clause
Sentence- After finishing our work, we went to home.
A main clause or independent clause is complete in itself such as- we went to home is a complete sentence with meaning.
An independent clause or subordinate clause is incomplete and lacks meaning without a dependent clause such as - after finishing our work.