Thanks for asking, it's an important point: In U.S. medical and feminist academics (and elsewhere,) "male/female" refers to sex: XX/XY chromosomes and the resu

Thanks for asking, it's an important point: In U.S. medical and feminist academics (and elsewhere,) "male/female" refers to sex: XX/XY chromosomes and the resulting organs, body type, etc, resulting in human sexual dimorphism, to which there are rare, exceptional cases, where the person is called intersex. "man/woman" are common terms colloquially referring to male/female people (you probably know this). In the context of certain feminisms, the words refer to people born male or female, and then raised into the gender roles defined by society as appropriate for male and female people. These gender roles are what are invoked by words like "manly", "womanly", "sissy", and other "gendered" words and insults. In other feminisms, the words refer to people who "identify" as one or the other, where this identity is either "innate" or otherwise fluid or something. Full disclosure, I sympathize with the former sort of feminism, so I'm not exactly the best person to give a comprehensive synopsis here. Judith Lorber's "Gender Inequality" is a book that goes over individual feminist movements and waves, without necessarily pushing any of them on the reader. It's not too long, I recommend it.