Units of time

A century is a period of one hundred years. A century may also describe one hundred of something else, like a score in a sports game.

The building in the picture was built more than a century ago.

A decade is ten years.

A minute is a time period of sixty (60) seconds. There are 60 minutes in an hour.

A second is a unit of time. There are 60 seconds in a minute.
Second is also the number two place in a competition.

A year marks a length of time of approximately 365 days. Each year has four seasons, summer, winter, autumn and spring.