Consent, also the principle of assent, means that all persons involved participate in a sexual act consensually and of their own free will. It is important that all participants are also factually able to consent. This is not the case if a person is intoxicated (e.g. by drugs, alcohol), is not conscious or there is a relationship of dependence. Consent can be changed and revoked at any time. Once YES does not always mean YES.
Sexualized violence includes all sexual acts that are forced or imposed on a person. It is an act of aggression and abuse of power, not the result of uncontrollable sexual urges. Sexual violence can take a variety of forms, including: inappropriate sexualized slurs and looks, the unwanted sending of pornographic content (such as dick pics), non-consensual touching and sexual acts, sexual coercion and harassment, and even rape. Since sexualized violence has nothing to do with sexuality, but is rather a means to an end, namely the maintenance of power, we explicitly use the term "sexualized" and not "sexual" violence.
Sources: gewaltinfo.at - hilfetelefon.de - gewalt-gegen-frauen.de
"Trigger" is English and means trigger. In relation to human emotions, the term is actually used in psychology, specifically for things that can trigger memories of traumatic experiences. A trigger warning is therefore always used when there is a fear that content could retraumatize people, such as those affected by sexual violence, racism, depression or eating disorders. Due to the increasingly colloquial use of the word trigger to express, for example, that something is annoying, the term loses importance and affected people and their traumas run the risk of not being taken seriously.
Source: https://pinkstinks.de/wozu-brauchen-wir-triggerwarnungen/