Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun companion

3 senses of companion

Sense 1
companion, comrade, fellow, familiar, associate -- (a friend who is frequently in the company of another; "drinking companions"; "comrades in arms")
       => friend -- (a person you know well and regard with affection and trust; "he was my best friend at the university")

Sense 2
companion, fellow traveler, fellow traveller -- (a traveler who accompanies you)
       => traveler, traveller -- (a person who changes location)

Sense 3
companion -- (one paid to accompany or assist or live with another)
       => attendant, attender, tender -- (someone who waits on or tends to or attends to the needs of another)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb companion

1 sense of companion

Sense 1
company, companion, accompany, keep company -- (be a companion to somebody)
       => consort, associate, affiliate, assort -- (keep company with; hang out with; "He associates with strange people"; "She affiliates with her colleagues")