A feud -LRB- -RRB- -LRB- referred to in more extreme cases as a blood feud or vendetta or faida -RRB- is a long-running argument or fight between parties -- often , through guilt by association , groups of people , especially families or clans .

A feud -LRB- -RRB- -LRB- also called blood feud or vendetta -RRB- is a long-running argument or fight between parties .
