double entendre vs ambiguity

double entendre and ambiguity both are nouns.

Word	Noun	Adjective	Verb	Adverb
double entendre	Yes	No	No	No
ambiguity	Yes	No	No	No

As nouns, ambiguity is a hypernym of double entendre; that is, ambiguity is a word with a broader meaning than double entendre:

double entendre: an ambiguity with one interpretation that is indelicate
ambiguity: an expression whose meaning cannot be determined from its context

double entendre (noun)	ambiguity (noun)
an ambiguity with one interpretation that is indelicate	unclearness by virtue of having more than one meaning
	an expression whose meaning cannot be determined from its context