flirt vs flirtation

flirt and flirtation both are nouns.

Word	Noun	Adjective	Verb	Adverb
flirt	Yes	No	Yes	No
flirtation	Yes	No	No	No

As nouns, flirt and flirtation are synonyms defined as:

flirt and flirtation: playful behavior intended to arouse sexual interest

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

flirt (noun)	flirtation (noun)
playful behavior intended to arouse sexual interest	playful behavior intended to arouse sexual interest
a seductive woman who uses her sex appeal to exploit men

flirt (verb)	flirtation (verb)
talk or behave amorously, without serious intentions
behave carelessly or indifferently