In the United States, where the term melting pot is still commonly used, the ideas of cultural pluralism and multiculturalism have, in some circles, taken precedence over the idea of assimilation. Alternate models where immigrants retain their native cultures such as the "salad bowl" or the "symphony" are more often used by sociologists to describe how cultures and ethnicities mix in the United States. Nonetheless, the term assimilation is still used to describe the ways in which immigrants and their descendants adapt, such as by increasingly using the national language of the host society as their first language.