I'm going to write my definitions about the words I saw on the movie we watched on last Friday. I'm not familiar with these words so I'm not sure if I define them correctly.
Moe: A word to express when you feel your mind heats up when you see cute stuffs or people.
Cosplay: When people wear costumes to enjoy being the characters in animation.
Tsundere: This is a combination behavior of "tsuntsun" and "deredere." Tsuntsun means when a person behaves like he/she is in a bad mood and talks to people as if he/she is mad a them. Deredere means when a person behaves as if he/she loves them.
Usually, people act tsundere to hide their feelings of love to whom they want to go out. In most cases, I think this behavior is expressed by girls.
Brikko: When a girl behaves in cute way because she wants people to think she is cute. I think this word can be said for any generations. But it is not an appropriate word to say I think.