desertion vs abandonment

desertion and abandonment both are nouns.

Word	Noun	Adjective	Verb	Adverb
desertion	Yes	No	No	No
abandonment	Yes	No	No	No

As nouns, desertion and abandonment are synonyms defined as:

desertion and abandonment: withdrawing support or help despite allegiance or responsibility

Other synonyms of desertion include defection.

As nouns, desertion and abandonment are synonyms defined as:

Other synonyms of desertion include forsaking.

desertion (noun)	abandonment (noun)
withdrawing support or help despite allegiance or responsibility	withdrawing support or help despite allegiance or responsibility
the act of giving something up	the voluntary surrender of property (or a right to property) without attempting to reclaim it or give it away
	the act of giving something up