equivocation vs tergiversation

equivocation and tergiversation both are nouns.

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

As nouns, equivocation and tergiversation are synonyms defined as:

equivocation and tergiversation: falsification by means of vague or ambiguous language

equivocation (noun)	tergiversation (noun)
falsification by means of vague or ambiguous language	falsification by means of vague or ambiguous language
intentionally vague or ambiguous	the act of abandoning a party for cause
a statement that is not literally false but that cleverly avoids an unpleasant truth