chairwoman vs chairperson

chairwoman and chairperson both are nouns.

Word	Noun	Adjective	Verb	Adverb
chairwoman	Yes	No	No	No
chairperson	Yes	No	No	No

As nouns, chairperson is a hypernym of chairwoman; that is, chairperson is a word with a broader meaning than chairwoman:

chairwoman: the female officer who presides at the meetings of an organization
chairperson: the officer who presides at the meetings of an organization

Other hypernyms of chairwoman include chair, president, adult female, woman.

chairwoman (noun)	chairperson (noun)
the female officer who presides at the meetings of an organization	the officer who presides at the meetings of an organization