Difference Between Era and Period

Historical events and their significance is well understood only when there is a clear understanding of the blocks of time. Indeed, history denotes every happening of the past using the time factor with different terms.


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These terms denote the events in a perfect sequence. The terminologies Era and Period play a notable role in this context.

Era vs Period

The difference between Era and Period is in the time and event factor. Era denotes the start and end time of a significant event, while Period denotes an event that necessarily does not have any specific time frame for that to have happened. That means to say, an era has specific years and dates while a period does not have it.

Era vs Period

Era is a time that has important events happened on the earth. Era is a time frame that defines the chronological factors in history. The term era also defines a particular quality of situations that happened during that particular time frame.

History denotes Era as incredible developments that have happened in the past.

The period is again a chunk of time in history that is large but not as large as denoted by era also denotes an important event that had happened in the past.

The term period denotes a concrete characteristic factor of the event. The period may connect the eras, too but does not have a definite timeline.

Comparison Table

Parameters of ComparisonEraPeriod
NotificationEra denotes the timeline.Period denotes the event.
Terminology’s OriginLatin – meaning Counters for CalculationGreek – meaning Cycle of Time
DurationUsually longer than PeriodUsually shorter than Era
Time FrameA whole timeA portion of time in an era or even eras
PeriodizationEra cannot be changed.The period can change if a piece of new information is discovered during the block of time.

What is Era?

Era is the term used to denote a specific period in history. It is a lengthier time frame mostly that denotes several events that happened during that time frame. Era denotes the time frame than the event that had happened by itself.

The dictionary defines Era as ‘A Long and Distinct Period of History’.

Era is a major division of time in history that includes a whole lot of events that are more significant and also trivial. The term ideally denotes the period that is useful for the people to understand the events in a sequence. A few examples

  1. Regnal Era
  2. Calendar Era
  3. Geological Era

Era defines the exact time frame. It is the longest time in a calendar era. It has a specific start and end date too. For example, An era can denote a particular dynasty that existed during a time. It can also be a mythological event that had happened between two specific time frames.

The most used terminology is the calendar era. It denotes the rise and fall of an empire or the beginning of cosmic action, or even a start of a particular set of periods. Moreover, the era is very well used in history that denotes several periods in it.

Though the term era always denotes a longer time interval, in recent times, the term is also used to denote a few shorter period.


What is Period?

A period is a time factor that denotes a certain significant event that had happened in the past. The term period informs the event than the time frame. More importantly, the term period does not have an exact time.

It is a block of time that has a definite characteristic, unlike the ones denoted by the term era. Several ‘periods’ make an era, sometimes. The period is the term used to denote the length of time during which a particular event had happened.

Examples of Period

  1. Victorian Period
  2. Period of Elizabeth

Periodization by historians is a specific activity. As the ‘era’ denotes a whole lot of events during a time frame, ‘Period’ helps to categorize the same into definite events. Several periods form an era. It may also loom large into different eras.

A period is quantified based on events. Though period may overlap with eras, their time frame is usually shorter when compared with the ones notified under era. The term period is vulnerable. The duration might change if any new information is discovered.

The term period helps us to understand the history more exactly than being scattered without that. It denotes the culture, tradition, wars and many other happenings within that particular time frame. More evidently, period denotes one particular event that happened during that timeline.


Main Differences Between Era and Period

  1. The main difference between Era and Period is the factor that the term denotes. Era denotes a time that includes a whole lot of events that are significant and less significant too. Period denotes a timeline that has a specific event that has happened.
  2. The era has a definite timeline structure associated with it, while the period does not have a definite timeline for a particular time.
  3. In history, the term era is used to mention the exact start and end time of a lengthier set of events that had happened. While period denotes one particular event that is significant that had happened in the past.
  4. All the events denoted in the era might not be as significant as the events denoted by the term period.
  5. Era is longer in time duration than Period.
Difference Between Era and Period


  1. https://ixtheo.de/Record/667158162
  2. https://www.tandfonline.com/doi/abs/10.1080/13600829908443200?journalCode=cgsj20
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