Women is the plural for woman. Woman’s is the singular possessive form of woman. Women’s is the plural possessive form of women.
We use women when we want to make the word “woman” plural.
So it is:
I saw one woman.
I saw two women.
Womans is incorrect and should not be used as the plural for Woman.
Woman’s is the singular possessive form of woman. We use the possessive form of woman when we want to show that one woman owns something.
This is a woman’s bag.
A woman’s heart is all you need.
Remember we are talking about only one woman.
Womans’ or Women’s
Women’s is the plural possessive form of women. When the noun already ends in “s” and we want to make the word possessive, we need to put the apostrophe after the “s”. In this case, the plural is irregular and “women” doesn’t end in “s” so we need to add ‘s to women.
Women’s rights need to be respected.