According to the ISO, Artificial Intelligence (AI) refers to "a machine or computer system’s ability to perform tasks that would typically require human intelligence.”
Artificial Intelligence includes many technologies that you may already be familiar with, such as autocorrect on your phone, spellcheck in Microsoft Word, and virtual assistants like Siri or Alexa. These technologies rely on vast quantities of data for analysis by AI systems and researchers to accurately make predictions that can be used to do some kind of work.
Source: Artificial intelligence: What, how, why | iso.org
Generative AI is a specific type of artificial intelligence that can create novel content (text, images, audio, video). This type of AI uses a Large Language Model (LLM) to understand prompts provided by a user and create an output that is statistically plausible based on the provided prompt. This differs from traditional AI technologies that rely on predefined rules and closed sets of training data. Traditional or non-generative AI systems are not able to create original content from a set of training data.