Intercultural Communication: Communication between at least two individuals who are from different cultures.
It’s important to note the difference in culture between two individuals can be in their overarching culture or microculture, frequently referred to as subculture. For example, two people can be members of American society and share the same overarching culture. However, each person may belong to different microcultures (i.e., social groups, religions, regions of the country, etc.).
It’s common for a microculture to have its own vernacular or communication style that differs from the overarching culture, even though they share the same language.