Mostly agree with Don Grushkin’s answer to What is the difference between Chauvinism and Jingoism? However, the nuance I get for jingoism is belligerence, not just boosterism. Chauvinism OTOH can be just passive-aggressive.
Moreover, chauvinism has extended from bigotry about one’s nation to other in-groups, predominantly males (“male chauvinist pig”)—although that sense still seems secondary to me. Jingoism has not undergone that extension.
, Ph.D. Cultural/Linguistic Anthropology, University of Arizona