elan vs panache

elan and panache both are nouns.

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

As nouns, elan and panache are synonyms defined as:

Other synonyms of elan include dash, flair, style.

elan (noun)	panache (noun)
enthusiastic and assured vigor and liveliness	a feathered plume on a helmet
distinctive and stylish elegance	distinctive and stylish elegance
a feeling of strong eagerness (usually in favor of a person or cause)