elan vs zeal

elan and zeal both are nouns.

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

As nouns, elan and zeal are synonyms defined as:

elan and zeal: a feeling of strong eagerness (usually in favor of a person or cause)

Other synonyms of elan include ardor, ardour.

elan (noun)	zeal (noun)
enthusiastic and assured vigor and liveliness	prompt willingness
distinctive and stylish elegance	a feeling of strong eagerness (usually in favor of a person or cause)
a feeling of strong eagerness (usually in favor of a person or cause)	excessive fervor to do something or accomplish some end