Meaning of the word "Common Era" in English

What does "Common Era" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

Common Era

US /ˈkɑː.mən ˈer.ə/
UK /ˈkɒm.ən ˈɪə.rə/
"Common Era" picture

Noun

the period of time beginning with the year 1 in the Gregorian calendar, used as a secular alternative to AD (Anno Domini)

Example:
The Roman Empire reached its peak in the second century of the Common Era.
Many historians now use the term Common Era instead of AD.