Cultural assimilation is the process by which people or groups of one culture lose some or all aspects of their own identity in the process of adopting the behavioural patterns, values, and norms of another given dominant culture. This can happen spontaneously or due to certain external forces. It has numerous contexts ranging from language to traditions and social behaviour. Cultural assimilation can lead to different assumptions of culture over generations and it will lead to the almost complete eradication of the original culture.
Assimilation identity is often the loss of cultural identity, while consolidation allows multiple cultural identity in a society. Although the previous one needs consistency, the latter encourages diversity.
Example: An immigrant who stops using their native language and fully adopts the culture of the dominant, who learns a new language but still practices their local traditions is an example of assimilation. A typical multicultural city would be one where people maintain their local customs while participating in the wider society. That would be cultural integration.
Assimilation can be said to be one-dimensional and, more often than not, leads to the loss of culture, while acculturation is limited to the sharing of culture without complete adoption. Assimilation can be more long-lasting, while acculturation is often progressive or fluid.