Things and qualities that have a maleness or femaleness to them, that's gender.
From the economist.com
A meek woman is allowed to taste strength by turning her femaleness into theater.
From the boston.com
Therefore, the high concentration can induce femaleness of flowers in some species.
From the en.wikipedia.org
Reherarsing various permutations of femaleness is pretty trivial if yoou are a female.
From the guardian.co.uk
To Ott, femaleness, not ethnicity, is at the heart of the story.
From the time.com
In fact, the more I watch her, the more I am convinced that her femaleness holds the key to her success.
From the washingtonpost.com
She is fearless, and that, in combination with her femaleness, makes her scary-a new kind of political predator.
From the newsweek.com
Such indulgence is licensed by the simple fact that femaleness is for a heterogeneous set of reasons fascinating to all.
From the guardian.co.uk
That women have, on average, behaved differently than men doesn't necessarily mean any one woman's femaleness is the reason why.
From the online.wsj.com
More examples
The properties characteristic of the female sex
Femininity (also called feminity, girlishness, marianismo, womanliness or womanhood) is a set of attributes, behaviors, and roles generally associated with girls and women. Femininity is made up of both socially-defined and biologically-created factors. This makes it distinct from the definition of the biological female sex, as both males and females can exhibit feminine traits...