pa vs papa

pa and papa both are nouns.

Word	Noun	Adjective	Verb	Adverb
pa	Yes	No	No	No
papa	Yes	No	No	No

As nouns, pa and papa are synonyms defined as:

Other synonyms of pa include dad, dada, daddy, pappa, pop.

pa (noun)	papa (noun)
an informal term for a father; probably derived from baby talk	an informal term for a father; probably derived from baby talk