abandonment vs desertion

abandonment and desertion both are nouns.

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

As nouns, abandonment and desertion are synonyms defined as:

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

Other synonyms of abandonment include defection.

As nouns, abandonment and desertion are synonyms defined as:

Other synonyms of abandonment include forsaking.

abandonment (noun)	desertion (noun)
withdrawing support or help despite allegiance or responsibility	withdrawing support or help despite allegiance or responsibility
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
the act of giving something up