This is the 6293rd most frequent Japanese word.
コラ
"コラ" is a casual interjection used to scold or call attention, akin to "Hey!" or "Hey, stop that!" in English.
In this sentence, 'コラ' is used as an informal exclamation to call someone's attention or express surprise or disapproval.
コラ、何しているの！
Hey, what are you doing!
Here, 'コラ' is referenced as an example of an exclamation, and the speaker is expressing their confusion regarding its use.
コラと言われても困るよ。
Even if you say 'Hey', I'm confused.
In this case, 'コラ' is demonstrated as an angry or stern exclamation used by someone in authority to reprimand.