Like a duchess or goddess, does the suffix "-ess" is a term that refers to female?

Native speaker’s answer
Rebecca
Yes, one of the uses of the suffix "-ess" is to add it to nouns to indicate gender. Some words include Duchess, goddess, and giantess. A more common feminine suffix is "tress," which includes words like actress, waitress, mistress, and so on. Ex: She is the goddess of love and war. Ex: The giantess quickly climbed down the beanstalk, in search of Jack.