Polka is a noun.
A Polka is a dance
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
to say polka in japanese is poruka which is polka
the answer you are looking for is Polka
It is said in the related article that polka is of Bohemian origin (Bohemia being the western part of the Czech Republic) - but that it was met with success in Europe, notably in France afterwards.
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.