Multimodal models refer to large neural network models like chatGPT, Gemini, etc. that can work with both language and images. Over the past three years, several social media companies have started building them. For e.g., Meta has built the Llama models, X (previously twitter) has built the Grok models. These models tend to often be trained on data collected from the social media, albeit with user consent. 

Cyber-vigilantism is when people take the law in their own hand on the internet, without seeking help from the legal system. This includes the creation of name-and-shame websites for perpetrators, crowdsourcing and leaking of private information of such individuals etc.

Trading Blocs are areas with little to no customs barriers to trade between the countries in such blocks.