How to say "disagreement, difference" in Arabic

Arabic خ-ل-ف means "to come after, succeed, take another's place" — خَلِيفَة khalīfa, "caliph," is literally "successor," and خِلاف is "disagreement" — people who come after tend to see things differently. The matching Hebrew root is ח-ל-ף, but it drifted elsewhere: חילוף is an "exchange," תחליף a "substitute." Hebrew's everyday word for disagreement, מחלוקת, is unrelated — a different root about splitting things into shares (חלק).