Things and qualities that have a maleness or femaleness to them, that's gender.
From the economist.com
I resent very much, the slur on maleness that messrs Burkard and Burki publicise.
From the guardian.co.uk
A normal man has one x, but his y chromosome is decisive and establishes maleness.
From the time.com
There was an unmistakable whiteness and maleness to the first astronaut class.
From the time.com
The Y chromosome confers maleness and is passed, like surnames, from father to son.
From the sciencedaily.com
If that's the good side of conventional maleness, there is a maddening side.
From the time.com
Their qualification is simply assumed and is inherent in their whiteness and maleness.
From the cnn.com
Hurt and Fox must be purged of their aggressiveness, their flippancy, their maleness.
From the time.com
Home Improvement, by contrast, is a show about men, or more precisely about maleness.
From the time.com
More examples
The properties characteristic of the male sex
A male (u2642) organism is the physiological sex that produces sperm. Each spermatozoon can fuse with a larger female gamete, or ovum, in the process of fertilization. A male cannot reproduce sexually without access to at least one ovum from a female, but some organisms can reproduce both sexually and asexually...