harvester that heads and threshes and cleans grain while moving across the field(noun.artifact)
source: wordnet30
a consortium of independent organizations formed to limit competition by controlling the production and distribution of a product or service(noun.group)
To unite or join; to link closely together; to bring into harmonious union; to cause or unite so as to form a homogeneous substance, as by chemical union.(verb)
source: webster1913
To form a union; to agree; to coalesce; to confederate.(verb)