I'm not sure what you're trying to do, but you're doing it wrong. Might as well ask why the words "garbage", "rubbish" and "trash" all exist if they have identical meaning. Synonyms are a thing.
Furthermore, the anon was right in implying that leftist / Marxist types have a knack of completely redefining meaning of words. Examples:
Bourgeoise: City dweller -> Capitalist
Racism: Hatred of another race -> Prejudice + power
Fascism: National Syndicalism/Corporatism -> reactionary late stage Capitalism
Just because Marxists constantly attempt to replace established definitions with their ideological newspeak, it doesn't mean we have to follow their autism. >>8295740
Yes, grammar. Still not "social role" or "identity" or whatever the hell.