argument v. argomento
If you find you are fighting with someone in English, you are probably having an argument. But be careful about translating that word to argomento, which means the neutral idea of "subject" in Italian. You need to use the Italian words discussione or litigio (for a more intense argument).
Ex) I had an argument with my husband last night about our son.
Italian) Ho avuto una discussione con il mio marito circa il nostro figlio ieri sera.