Answer: commensal

AnswerCrossword Clue
commensal(of a person or group) not competing while residing in or occupying the same area as another individual or group having independent or different values or customs
commensalcompanion at table
commensal(of an animal, plant, fungus, etc.) living with, on, or in another, without injury to either
commensaleating together at the same table
commensaleating together at the same table.
commensalcommensal organism
commensaleating at the same table / one who eats at the same table