Generally speaking, the notion of "gender", more precisely of "grammatical gender", is used to classify nouns into groups. As an instance, in Italian language there are two categories labeled "masculine" and "feminine", with only some instances of vestigial neuter. As far as I know this classification has little to do with male and female: a cloud is masculine in French (le nuage) and feminine in Italian (la nuvola). It is well known that in English there are no such classes of nouns.
English grammar makes us conscious of "gender" in the third person singular pronouns; but here it is a matter of "natural" not "grammatical gender", since the pronouns are applied according to the sex of the person being referred to.
Words such as artist, athlete, cat, clerk, doctor, giraffe, patient, student, teacher, they, writer are common in natural gender and so they could denote either male or female.
I'm looking for an appropriate word to describe these words. Obviously this word cannot be "neuter", since "neuter" is already associated to the concept of "grammatical gender".