Clause :A grammatical arrangement that contains a set of words having a subject and a verb. Clause is a component of a complete sentence. A part of sentence having the two parts of speech i.e. Subject and Predicate (gives complete idea). Clause gives complete meaning and can even be a complete sentence when standalone. A part of sentence without the two parts of speech i.e. Sentence and Predicate and (does not convey any idea).

Clause Example –
Fish Swims in the water.
She is sleeping on the floor.
They will meet at the concert.
He smiled.
She is sketching on the Wall.