Analogy

 What is analogy?

 Analogy is used from the Greek word analogia - ama, according to, and logos ration, proportion. It means an agreement or likeness between things in some circumstances or effects, when the things are otherwise entirely different.

In logic it is a form of reasoning in which similarities are inferred from a similarity of two or more things in certain particulars. In mathematics, it is proportion or ratio. In grammar, it is the process whereby words and grammatical forms are built upon the model of others. In biology, it is known as analogue which means an organ of another animal or plant, but that is different in structure and organ.

Analogy as a subject, does not only measure the extent of one's knowledge on general information, but likewise gauges his power of analysis.