double date vs engagement

double date and engagement both are nouns.

Word	Noun	Adjective	Verb	Adverb
double date	Yes	No	No	No
engagement	Yes	No	No	No

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

Other hypernyms of double date include appointment, date.

double date (noun)	engagement (noun)
a date in which two couples participate	the act of sharing in the activities of a group
	a hostile meeting of opposing military forces in the course of a war
	the act of giving someone a job
	employment for performers or performing groups that lasts for a limited period of time
	a mutual promise to marry
	contact by fitting together
	a meeting arranged in advance