Era.
age, time, period, date, generation, epoch, days
No, "comprehensive" is not a synonym for "lasting." "Comprehensive" refers to something that is thorough and inclusive, covering all or nearly all elements or aspects. In contrast, "lasting" describes something that endures over time or remains in existence for a long period. These two words convey different meanings and are used in different contexts.
The bubonic plages time period was the middel ages.
the classical time period
The time period of the Napoleonic Wars was 1803 to 1815.
age, time, period, date, generation, epoch, days
age, time, period, date, generation, epoch, days
Synonyms for the concept "time" could include period, duration, or interval. Synonyms for "a time" could include period, era, age, or epoch.
period
cold period, glacial period
A synonym for month is "Time".
quinquenial
lustrum
The only 7-letter synonym for peace (the answer to this question) may be harmony. But it does not represent an actual period of time as peace does.
Civilian Time
Interim
Time