be a co-author on (a book, a paper)
an associate that one works with
a writer who collaborates with others in writing something
writes (books or stories or articles or the like) professionally (for pay)
choose or elect as a fellow member or colleague
an odorless very poisonous gas that is a product of incomplete combustion of carbon
a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
