encomium vs pean

encomium and pean both are nouns.

Word	Noun	Adjective	Verb	Adverb
encomium	Yes	No	No	No
pean	Yes	No	No	No

As nouns, encomium and pean are synonyms defined as:

Other synonyms of encomium include eulogy, paean, panegyric.

encomium (noun)	pean (noun)
a formal expression of praise	a formal expression of praise
	(ancient Greece) a hymn of praise (especially one sung in ancient Greece to invoke or thank a deity)