father vs male parent

father and male parent both are nouns.

Word	Noun	Adjective	Verb	Adverb
father	Yes	No	Yes	No
male parent	Yes	No	No	No

As nouns, father and male parent are synonyms defined as:

father and male parent: a male parent (also used as a term of address to your father)

Other synonyms of father include begetter.

father (noun)	male parent (noun)
a male parent (also used as a term of address to your father)	a male parent (also used as a term of address to your father)
the founder of a family
a person who holds an important or distinguished position in some organization
a person who founds or establishes some institution
the head of an organized crime family

father (verb)	male parent (verb)
make (offspring) by reproduction