1.Someone's first,second,third(and so on..) name
It is a given name ; a name given at birth.
In english it is derived by the Danish form of the name Katherine which means pure.It is considered a name for girls.
In Armenian, it is a boys name thus make it for both boys and girls.
To know more :
2.The Karen people ; people who come from a place named Karen thus making them a Karen.They reside in Thailand and Burma.They are approximately 7,400,000 million combined.
For more info
3.The Karen language
spoken by the Karen people.
An exemple of the language here :
1. "Hello, my name is Karen.Nice to meet you."
2.The Karen people reside not only in Thailand
but also in Burma
Jen : Pat, have you ever heard the Karen language?
Pat : It is actually my native language