Hello There @I5oanisDain2eQT, How are you doing?
OK, so you want the definition and the two typical definitions; based on "Websters New Dictionary" are the following:
1. an exchange of diverging or opposite views, typically a heated or angry one.
2. a reason or set of reasons given with the aim of persuading others that an action or idea is right or wrong.
In other words, it may be known as a Discussion over a topic, or even more physical like a fight. Usually an argument is seen over topics in politics and so on. I really hope i helped!
Happy Studying!