Green

nouns

United States labor leader who was president of the American Federation of Labor from 1924 to 1952 and who led the struggle with the Congress of Industrial Organizations (1873-1952)
an environmentalist who belongs to the Green Party
is derived from
is a member of
an environmentalist political party
is a type of (narrower)
someone who works to protect the environment from destruction or pollution
a river that rises in western Wyoming and flows southward through Utah to become a tributary of the Colorado River