Co and Higher up

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

Higher up and co are semantically related in leader of military or other organization topic. In some cases you can use "Higher up" instead a noun "Co".

Higher up adverb - In or to a place that is higher.

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