A person who takes part in an undertaking, business, or cooperation with others.

to happen at the same time as something else; to be a concomitant phenomenon

to accompany

companion; comrade; fellow

a spouse, lover, or life partner with whom one shares a deep bond

dancing partner

to accompany someone or to keep each other company

a woman who attends the bride at a wedding, including maid or matron of honor

(of an elderly couple) husband or wife

best man; groomsman

to accompany (musically)

to form a companionship or go with someone

to keep someone company or act as a companion

to keep someone company or provide companionship

to provide vocal accompaniment for a lead singer or performance

to perform as a background or backup dancer for a lead singer or performer

Yaohan retail group

a person who travels with someone else, especially on a long or significant journey.

to be accompanied by

to join with another person as a companion, especially for travel or a specific activity

to accompany

to act as a companion

natural gas found in association with oil in a reservoir

a person who joins in play or recreation, especially among children

to accompany

HMS Consort, Royal Navy destroyer involved in the 1949 Amethyst incident on the Yangtze River (Changjiang)

being close to the sovereign can be as perilous as lying with a tiger

(Taiwan) a gift given when visiting someone, especially a local specialty brought back from one's travels or a special product of one's own country taken overseas

(astronomy) companion star

electric or steam heat tracing used to maintain the temperature of pipes and equipment

adjoint matrix (math.)

severe fever with thrombocytopenia syndrome (SFTS)

cooperative partner

to call together one's friends or associates to participate in an activity

Coffee-mate (a brand of non-dairy creamer manufactured by Nestlé)

husband and wife in youth, companions in old age

a strategic partner

a cappella (music)

lifelong partner or companion

(of a group) to stay together; to keep each other company while traveling

good companion