Question

what does clause means in detail
with example

Answer 1

Clause is a group of words that contain a subject and a verb.
A clause can be independent that is it can convey the thought  and also clause can be a dependent clause that is  it supports the thought conveyed.

Example of an clause:
Even though her father guided her, she failed in mathematics two times.

Here the first part of sentence " even though her father guided her" doesn't convey the complete thing but it rather supports the clause "she failed in mathematics two times"
Therefore "even though her father guided her" is dependent clause and "she failed in mathematics two times" is independent clause.