elan vs flair

elan and flair both are nouns.

Word	Noun	Adjective	Verb	Adverb
elan	Yes	No	No	No
flair	Yes	No	No	No

As nouns, elan and flair are synonyms defined as:

Other synonyms of elan include dash, panache, style.

elan (noun)	flair (noun)
enthusiastic and assured vigor and liveliness	distinctive and stylish elegance
distinctive and stylish elegance	a natural talent
a feeling of strong eagerness (usually in favor of a person or cause)	a shape that spreads outward