What is Machine Learning?

In our daily lives we almost don't know definition of anything. For example, What is pen?

"A pen is an instrument use to write."

Pencil is also used to write.

"A pen body is made from metal."

There are many pen whose body is made from plastic.

"A pen have a nib."

What is nib?

See our brain don't know what exactly many things are but our brain has made some pattern to understand the world around us. The same logic applies to Machine Learning.

In Machine Learning there is a model is trained on some dataset and model create a pattern to understand the data. After a model is trained, it is used to predict out in real-life.