The word mechanism is a noun and you can use the word for a set of moving parts in a machine that is meant to perform a specific task. The following sentence can make the meaning of the term quite clear as it is used in the context: A watch runs on a very delicate mechanism. The sentence conveys that watch is a kind of machine which has a very delicate set of parts to run it.
The word has its figurative usage also but the meaning remains the same. You can use the word for a method or a system through which you can achieve something. Given below is a sentence that can make the meaning clear in this context: The government has planned a mechanism to deal with all the complaints that are coming because of the recent incident. The sentence says that the government has a specific set of plan by and applying that it can achieve what it intended to.
The word has its figurative usage also but the meaning remains the same. You can use the word for a method or a system through which you can achieve something. Given below is a sentence that can make the meaning clear in this context: The government has planned a mechanism to deal with all the complaints that are coming because of the recent incident. The sentence says that the government has a specific set of plan by and applying that it can achieve what it intended to.