begetter vs pa

begetter and pa both are nouns.

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

As nouns, pa is a hyponym of begetter; that is, pa is a word with a more specific, narrower meaning than begetter:

Other hyponyms of begetter include dad, dada, daddy, papa, pappa, pop, father-in-law, old man, pater.

begetter (noun)	pa (noun)
a male parent (also used as a term of address to your father)	an informal term for a father; probably derived from baby talk