deceit vs four flush

deceit and four flush both are nouns.

Word	Noun	Adjective	Verb	Adverb
deceit	Yes	No	No	No
four flush	Yes	No	No	No

As nouns, four flush is a hyponym of deceit; that is, four flush is a word with a more specific, narrower meaning than deceit:

deceit: the act of deceiving
four flush: the act of bluffing in poker; deception by a false show of confidence in the strength of your cards

deceit (noun)	four flush (noun)
the act of deceiving	the act of bluffing in poker; deception by a false show of confidence in the strength of your cards
the quality of being fraudulent
a misleading falsehood