Someone can be masculine in the sense of being a biological male or feminine in the sense of being a biological female because those are objectively measurable physical characteristics
But someone can not be said to be masculine or feminine in their thoughts & behavior because those are subjective unmeasurable claims in the fields of psychology, sociology, philosophy, religion
There are no feminine males & there are no masculine females
One exception law & registered gender
@shortstories Except things like testosterone levels are proven to change one's behavior in a consistent manner. So behavior can be masculine or feminine, since it is not entirely subjective, as it's tied to masculinity/femininity to an extent.
There absolutely are feminine males and masculine women in both looks and behavior.