Co and Top brass

Co noun - A hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition.

Top brass and co are semantically related in person who manages an organization topic. In some cases you can use "Top brass" instead a noun "Co", when it comes to topics like leader of military or other organization.

Top brass noun - The most important persons in a governing body.

Co and top brass are semantically related in person who manages an organization topic. Sometimes you can use "Co" instead a noun phrase "Top brass", if it concerns topics such as leader of military or other organization.