Glossary
AI and Investing Glossary: 20 Key Terms Explained

This glossary explains 20 key terms in AI and investing in plain English, each with a short definition, an example and common questions. Start with the AI terms if you are learning to use tools like ChatGPT and Claude, and the investing terms if you are learning to build a portfolio.
AI terms
- AI Agent: An AI agent is an AI system that works toward a goal by planning steps, using tools such as search or files, checking the result and deciding what to.
- AI Automation: AI automation is a chain where a trigger starts a task, an AI step reads or writes something, and an action saves or sends the result, without you.
- AI Hallucination: An AI hallucination is a confident answer from an AI that is not true, such as a made-up fact, number, quote or source.
- Artificial Intelligence (AI): Artificial intelligence is software that performs tasks that normally need human intelligence, such as understanding language, recognising images.
- Context Window: A context window is the amount of text an AI model can consider at once, including your prompt, any documents you add and its own reply.
- Generative AI: Generative AI is a type of artificial intelligence that creates new content, such as text, images, audio, video or code, from a prompt you give it.
- Large Language Model (LLM): A large language model, or LLM, is an AI system trained on huge amounts of text to understand and generate human language by predicting the most.
- Multimodal AI: Multimodal AI can work with more than one type of information at once, such as text, images, audio and video.
- Prompt: A prompt is the instruction or question you give an AI tool. A clear prompt states the role, the context, the task and the format you want back.
- Prompt Engineering: Prompt engineering is the practice of writing and refining prompts so that an AI gives reliable, useful results.
- Retrieval-Augmented Generation (RAG): Retrieval-augmented generation, or RAG, is a method where an AI first retrieves relevant documents and then uses them to write its answer, so the.
- Token (AI): A token is a small piece of text, often part of a word, that an AI model reads and writes. In English, one token is roughly three quarters of a word.
Investing terms
- Asset Allocation: Asset allocation is how you divide your investments between asset types such as shares, bonds, cash and property.
- Compound Interest: Compound interest is interest earned on both your original money and on the interest it has already earned, so growth builds on itself over time.
- Dollar-Cost Averaging (DCA): Dollar-cost averaging is investing a fixed amount at regular intervals, such as every month, regardless of the price. In some countries the same idea.
- ETF (Exchange-Traded Fund): An ETF, or exchange-traded fund, is a fund that holds a basket of investments, such as shares, and trades on a stock exchange like a single share.
- Expense Ratio: An expense ratio is the yearly fee a fund charges, shown as a percentage of the money invested. A 0.10% ratio costs about 1 per 1,000 invested each.
- Financial Freedom: Financial freedom means having enough savings and income from assets to cover your living costs without needing to work for money.
- Index Fund: An index fund is a fund designed to match the performance of a market index, such as the S&P 500, by holding the same investments in the same.
- Portfolio Diversification: Portfolio diversification means spreading your money across different assets, sectors and regions so that one poor investment does less damage to the.

Learn this live, for free
Join the free 90-minute live masterclass, every Friday, 7 PM IST (India) or 7 PM ET (everywhere else). No tech background needed.
Register for the masterclass nowEducation only. This glossary is general information, not financial, legal or career advice.
Frequently asked questions
What is this glossary?
A plain-English reference to 20 terms used in AI and investing, with a definition, an example and common questions for each.
Who is it for?
Beginners who are learning to use AI tools or to invest and want clear definitions without jargon.
Is the glossary financial advice?
No. It is general education only and not financial, legal or career advice.
