This is the 8397th most frequent German word.
karel
"Karel" is not a standard German word; it may be a proper noun or name.
Here, 'Karel' is used as a proper noun, referring to a person's name.
Karel ist mein Freund.
Karel is my friend.
In this sentence, 'Karel' again functions as a proper noun, the subject performing the action of speaking multiple languages.
Karel spricht fünf Sprachen.
Karel speaks five languages.
Here, 'Karel' denotes the name of a company, used as an identifier for the organization's title.