double-dealer vs trickster

double-dealer and trickster both are nouns.

Word	Noun	Adjective	Verb	Adverb
double-dealer	Yes	No	No	No
trickster	Yes	No	No	No

As nouns, trickster is a hypernym of double-dealer; that is, trickster is a word with a broader meaning than double-dealer:

Other hypernyms of double-dealer include beguiler, cheat, cheater, deceiver, slicker.

double-dealer (noun)	trickster (noun)
a person who says one thing and does another	someone who plays practical jokes on others
	someone who leads you to believe something that is not true
	a mischievous supernatural being found in the folklore of many primitive people; sometimes distinguished by prodigious biological drives and exaggerated bodily parts