Understand · Glossary

The AI glossary, in plain English.

Every term you’ll hear, defined in a sentence, with an example from a small business. Terms are linked wherever they appear.

Plain English

Deep learning

Machine learning with large, many-layered neural networks: the approach behind most of today’s AI.

A kind of machine learning that uses neural networks with many layers to learn patterns from large amounts of data. It powers modern speech recognition, image tools and language models.

Why it matters

It explains why today’s AI handles messy things like speech, photos and writing so well, and why building it takes so much data and computing power.

At work

When your phone turns a voice note into text, deep learning is doing the listening.

Think of it like how you learned to recognize a friend’s face: not from rules, but from seeing it enough times, from enough angles.

Related terms

Machine learningNeural networkLLM
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