dancing partner vs pardner

dancing partner and pardner both are nouns.

Word	Noun	Adjective	Verb	Adverb
dancing partner	Yes	No	No	No
pardner	Yes	No	No	No

As nouns, pardner is a hypernym of dancing partner; that is, pardner is a word with a broader meaning than dancing partner:

dancing partner: one of a pair of people who dance together
pardner: an associate in an activity or endeavor or sphere of common interest

Other hypernyms of dancing partner include collaborator, cooperator, partner, dancer, social dancer.

dancing partner (noun)	pardner (noun)
one of a pair of people who dance together	an associate in an activity or endeavor or sphere of common interest