 Semantic considerations about the concept woman suggest to Stoljar that resemblance nominalism should be endorsed (Stoljar 2000, 28). It seems unlikely that the concept is applied on the basis of some single social feature all and only women possess. By contrast, woman is a cluster concept and our attributions of womanhood pick out “different arrangements of features in different individuals” (Stoljar 2000, 27). More specifically, they pick out the following clusters of features: (a) Female sex; (b) Phenomenological features: menstruation, female sexual experience, child-birth, breast-feeding, fear of walking on the streets at night or fear of rape; (c) Certain roles: wearing typically female clothing, being oppressed on the basis of one’s sex or undertaking care-work; (d) Gender attribution: “calling oneself a woman, being called a woman” (Stoljar 1995, 283–4). For Stoljar, attributions of womanhood are to do with a variety of traits and experiences: those that feminists have historically termed ‘gender traits’ (like social, behavioural, psychological traits) and those termed ‘sex traits’. Nonetheless, she holds that since the concept woman applies to (at least some) trans persons, one can be a woman without being female (Stoljar 1995, 282).