He gave his life for a great cause.
Without a just cause, war cannot be justified.
He gave his life for a great cause.
The revolutionaries fought while upholding their great cause.
There is a just cause behind this fight.
名分 is the specific justification or pretext given for an action, while 大義 is the larger moral cause behind it (the two combine in 大義名分).
道義 refers to everyday moral duty or ethics, whereas 大義 points to a lofty, world-scale cause worth sacrificing for.
大義 stresses a lofty moral cause or justification, while 旗印 focuses on the symbolic banner or slogan representing that cause.
大儀 (same pronunciation) means 'a bother' or 'tedious task', while 大義 means a great moral cause or justice.
just cause; good reason; pretext; justification · duty to one's country or sovereign
From Middle Chinese 大義 (dɑiH ŋˠiᴇH, 'great righteousness'). The kanji 大 means 'great' and 義 means 'righteousness' or 'justice'.