ardent vs impassioned

ardent and impassioned both are adjectives.

Word	Noun	Adjective	Verb	Adverb
ardent	No	Yes	No	No
impassioned	No	Yes	No	No

As adjectives, ardent and impassioned are synonyms defined as:

Other synonyms of ardent include fervent, fervid, fiery, perfervid, torrid.

ardent (adjective)	impassioned (adjective)
glowing or shining like fire	characterized by intense emotion
characterized by strong enthusiasm
characterized by intense emotion