poignancy vs pathos

poignancy and pathos both are nouns.

Word	Noun	Adjective	Verb	Adverb
poignancy	Yes	No	No	No
pathos	Yes	No	No	No

As nouns, poignancy and pathos are synonyms defined as:

poignancy and pathos: a quality that arouses emotions (especially pity or sorrow)

poignancy (noun)	pathos (noun)
a quality that arouses emotions (especially pity or sorrow)	a quality that arouses emotions (especially pity or sorrow)
a state of deeply felt distress or sorrow	a style that has the power to evoke feelings
	a feeling of sympathy and sorrow for the misfortunes of others