A possible synonym for socialization is upbringing. In this sense you can refer to the primary socialization (primary socialization agents, primary socialization process), which would involve the first years of a child's life.
More broadly, a synonym is enculturation.
enculturation.
There is no synonym.
In social studies, a synonym for different could be diverse or varied.
One possible synonym for biculturalism would be social integration.
Yes. Caste system. It was used in the Feudal era's of Asia and Europe and is still used in India.
Equality, fairness, justice.
A Social Network. Photo Gallery... etc
back up
Agreement, covenant, compact.
class, order, rank, status, stratum, social order
A synonym for "recluse" is "hermit." It refers to someone who prefers solitude and often avoids social interactions, living a quiet and secluded life. Other similar words include "loner," "solitary," and "introvert."
elegant, well dressed, well mannered, polite, skilled in social situations
Ergophobia is also called Ergasiophobia. It's the fear of work, and could be a subset of the fear of social phobia and performance anxiety.