get together is a verb and noun meaning "get people together". It carries 5 recorded senses.
work together on a common enterprise of project
“The soprano and the pianist did not get together very well”
“We joined forces with another research group”
become part of; become a member of a group or organization
“He joined the Communist Party as a young man”
a small informal social gathering
“there was an informal meeting in my living room”
Definitions, synonyms and semantic relations for get together come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.