A woman is an adult female human.[1] The plural of "woman" is "women". Young human females are called "girls". The word "women" is sometimes used to refer to females of any age (as in the phrase "Women's rights")
Women usually have less hair on their faces and bodies than men. After they finished puberty, and before menopause, women are usually able to get pregnant and give birth to babies.
Women have historically been treated differently from men. They have also been expected to act differently. In many places, the treatment of and expectations for women have changed with the spread of women's rights in the 20th century. Transgender women are male but socially live as women, and attracted more attention in the late 20th to early 21st century.