have an argument

hádat se
"They were having an argument and somehow I got caught up in it." (Oni se hádali a já jsem se do toho nějak zapletla.)

pohádat se
"He had an argument with Tony." (On se pohádal s Tondou.)
"Rachel and Fi have had a big argument and now they're not speaking to each other." (Rachel a Fi se hodně pohádaly a teď spolu nemluví.)