The feminine form usually has a neutral to negative range of meanings.
master (“a man who controls things”) x mistress (“a woman who is having sex with a married man”)
governor (“the chief executive of a state” x governess (“a woman employed in a private household to educate the children”)
- bachelor (of Arts, etc) x spinster
- dog (“you old dog!”) x bitch
The term I'm looking for refers to “pairs of words” and I’m not looking for “male chauvinism”, “gender discrimination”, “androcentrism”, “sexism”, misogynism or any word related to sociology.