Male parent and Pappa

Male parent noun - A male parent (also used as a term of address to your father).

Pappa and male parent are semantically related. In some cases you can replace term "Pappa" with "Male parent", this terms are similar.

Pappa noun - An informal term for a father; probably derived from baby talk.

Male parent and pappa are semantically related. You can use "Male parent" instead a noun "Pappa".