asunder vs apart

asunder and apart both are adjectives.

Word	Noun	Adjective	Verb	Adverb
asunder	No	Yes	No	Yes
apart	No	Yes	No	Yes

As adverbs, asunder and apart are synonyms defined as:

asunder (adjective)	apart (adjective)
widely separated especially in space	having characteristics not shared by others
	remote and separate physically or socially

asunder (adverb)	apart (adverb)
into parts or pieces	not taken into account or excluded from consideration
	into parts or pieces
	separated or at a distance in place or position or time
	one from the other
	placed or kept separate and distinct as for a purpose
	away from another or others