flirting vs dalliance

flirting and dalliance both are nouns.

Word	Noun	Adjective	Verb	Adverb
flirting	Yes	No	No	No
dalliance	Yes	No	No	No

As nouns, flirting and dalliance are synonyms defined as:

flirting and dalliance: playful behavior intended to arouse sexual interest

Other synonyms of flirting include coquetry, flirt, flirtation, toying.

flirting (noun)	dalliance (noun)
playful behavior intended to arouse sexual interest	the deliberate act of delaying and playing instead of working
	playful behavior intended to arouse sexual interest