Cisbian 

Currently, it is an unofficial term meant for women who are cisgendered, but they face oppression for being lesbians. In terms of intersectionality, they occupy a position of privilege higher than trans-women, and this higher position of privilege is used against cisbians quite often; with phrases like "check your privilege, cisgender." Trans-women tend to have an addiction and thirst to this kind of woman, and they would become slightly violent if they do not conquer her. Interestingly, the "Madonna-Whore Complex" would become observable from trans-women's angry lashings at cisbians.

Queer Folx GenderQueer teacher: So, Sally you have to understand that even though you are shunned by society for being a lesbian; you are still privileged!
Sally: Why?
Queer Folx GenderQueer teacher: It is because you are a cisbian silly!

Cisbian by Your wife's step-bro June 20, 2023

Casbian 

Short for a 'casual lesbian,' a casbian is a girl who makes out with other girls at parties or for "internet videos," or in any other casual setting. She's not necessarily a lesbian or bi-sexual but still goes for the girl on girl action on few occasions.

Bro 1 - "Dude I saw your girlfriend making out with a CHICK at the party last week. Tough break that she'd leave you for another girl."
Bro 2- "Oh it's not a big deal, we're still together. She's just a casbian."
Bro 1 - "Highest of fives to you sir!"

Casbian by loginabox22 May 7, 2011