Here is what I find to be the core similarities among those using the term for their own beliefs, ideas, movements and agendas for action: A. Feminism consists of ideas and beliefs about what culture is like for women just because they are women, compared to what the world is like for men just because they are men. In ethical terms, this form or aspect of feminism is descriptive.
https://www.thoughtco.com/what-is-feminism-3528958
What is Feminism? Feminism: What is it? Feminism is an interdisciplinary approach to issues of equality and equity based on gender, gender expression, gender identity, sex, and sexuality as understood through social theories and political activism.
http://wgs.eku.edu/what-feminism-0
Sexism is a form of discrimination based on gender. While many people use the term specifically to describe discrimination against women, it can also affect men, intersexuals, and transsexuals, along with individuals who eschew traditional gender roles and identities, such as people who identify as genderqueer.
http://www.wisegeek.org/what-is-sexism.htm
Feminism refers to a diverse variety of beliefs, ideas, movements, and agendas for action. The usual and most basic definition of feminism is that it is the belief that women should be equal to men and now aren't, and that it is also any actions, especially organized, that promote women's rights to move towards equality with men.
https://www.thoughtco.com/what-is-feminism-3528958
Sexism is discrimination, prejudice, or stereotyping on the basis of gender. Sexism is most often expressed toward girls and women. It has been characterized as the hatred of women and entrenched prejudice against women..
https://en.wikipedia.org/wiki/Sexism
Sexism can be used against men who fulfill traditional female roles like teaching. A sexist may believe that women are unsuited for traditionally male roles like military command. Women are more commonly the target of sexual harrassment. Sexism can undercut a woman in a position of authority.
http://www.wisegeek.org/what-is-sexism.htm
Feminism is not the belief that one gender should be raised in power above another. The very definition of feminism shows a complete opposition to this belief. So when people comment against feminism, they are supporting sexism. There is no sitting on the fence. You are either a feminist or sexist.
http://www.huffingtonpost.com/womens-rights-news/what-is-feminism_b_6985612.html
Sexism also does not occur in a vacuum. It can be combined with ableism, racism, and other prejudices. Defeating this and other forms of discrimination often requires a great deal of personal courage, and a willingness to call others out on their behavior while recognizing such behavior in oneself.
http://www.wisegeek.org/what-is-sexism.htm
Feminism is the belief in the social, political, and economic equality of the sexes. Feminist activism is the struggle for that equality. Core beliefs. Sexism exists. Sexism against women (misogyny) is enduring, pervasive, systemic, cultural, and ingrained. Men and women should have equal rights and opportunities. Women are intellectual equals and social equals to men.
http://cathyreisenwitz.com/the-definition-of-feminism-what-does-feminism-mean/
Sexism or gender discrimination is prejudice or discrimination based on a person's sex or gender. Sexism can affect either gender, but it is particularly documented as affecting women and girls.
https://en.wikipedia.org/wiki/Sexism
what is sexism
Sexism is discrimination, prejudice, or stereotyping on the basis of gender.