pa vs pappa

pa and pappa both are nouns.

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

As nouns, pa and pappa are synonyms defined as:

pa and pappa: an informal term for a father; probably derived from baby talk

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

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