tergiversation vs abandonment

tergiversation and abandonment both are nouns.

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

As nouns, abandonment is a hypernym of tergiversation; that is, abandonment is a word with a broader meaning than tergiversation:

Other hypernyms of tergiversation include desertion, forsaking.

tergiversation (noun)	abandonment (noun)
falsification by means of vague or ambiguous language	withdrawing support or help despite allegiance or responsibility
the act of abandoning a party for cause	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