The term you are looking for is busser. You can also use dishwasher, because that job would incorporate all of the job duties in your question here. It's not bussing. It's actually called Stewarding It's a job that is done NOT during service hours. They are responsible for the more detailed cleaning. It's a more prominent position in hotels, but I know some restaurants that have stewards come in before or after service to do the hard cleaning.
People of different nationalities. noun. Nationality is the state of being part of a nation whether by birth or naturalization or ties to a specific nation. 1  An example of nationality is German to a German person born in Germany. 2  An example of nationality is Italian to a person with Italian roots born in the United States.
-Â·ties. 1  national quality or character. 2  the status of belonging to a particular nation by birth or naturalization; identification as to national origin. 3  the condition or fact of being a nation. 4  a national or ethnic group, esp. of immigrants from some other country in full nationality group.