selectwoman vs elected official

selectwoman and elected official both are nouns.

Word	Noun	Adjective	Verb	Adverb
selectwoman	Yes	No	No	No
elected official	Yes	No	No	No

As nouns, elected official is a hypernym of selectwoman; that is, elected official is a word with a broader meaning than selectwoman:

selectwoman: a female elected member of a board of officials who run New England towns
elected official: official who won the office in a free election

Other hypernyms of selectwoman include adult female, woman.

selectwoman (noun)	elected official (noun)
a female elected member of a board of officials who run New England towns	official who won the office in a free election