I believe, the noun "boss", when meant as "a person who exercises control or authority", does not imply legal status or purpose of any group or organization. h

I believe, the noun "boss", when meant as "a person who exercises control or authority", does not imply legal status or purpose of any group or organization. https://www.merriam-webster.com/dictionary/boss https://www.merriam-webster.com/dictionary/boss gives an example of "union bosses".