To tell in a descriptive way.
To interact.
To respond through reaction.
To have a connection.
To bring into a relation, association, or connection (between one thing and another).
To identify with; to understand.
To specify: to mention specifically.
To become distinct or separate from what is common
To focus one's study upon a particular skill, field, topic, or genre.
To make distinct or separate due to form or function.
To narrow in scope.
To be known or notorious for some specialty.
To focus one's business upon a particular item or service.