quarrel
諍 centers on verbal conflict: quarreling, arguing, or disputing with words.
諍 combines 言 (speech) with 争 (conflict, contend), suggesting a dispute carried out through words.
Words (言) plus conflict (争) make a quarrel: imagine two people arguing loudly, their speech turning into a fight.
For ソウ, picture a quarrel so heated it feels like a soul-deep argument: soul -> ソウ, and the words clash.