Yandere vs. Tsundere

A character, usually a girl, who has a obsessive side in regards to their crush, ready to use violent and murderous means to maintain an exclusive bond.

A cold, nitpicky character, usually a girl, who conceals (without complete success) a bashfulness in the presence of their crush.

Showing qualities typical of a tsundere.

Tsundere (ツンデレ, pronounced [tsɯ̥ndeɾe]) is a Japanese term for a character development process that depicts a character with a personality who is initially cold, stern, stoic, harsh, temperamental, hotheaded (and sometimes even hostile) before gradually showing a warmer, friendlier side over time. The word is derived from the terms tsun tsun (ツンツン) ('to turn away in disgust or anger') and dere dere (デレデレ) ('to become affectionate').