Can someone explain to me what analysis 'depth' actually means

says this about depth: "This number describes how many moves ahead the engine is looking in order to make its decision on what the best move is." This is exactly what I always thought depth was. But looking at analysis seems to indicate otherwise. Take these examples of analysis of the same

What does depth mean in computer chess analysis? - Quora

Recession: Definition, Causes, Examples and FAQs

What does depth mean in computer chess analysis? - Quora

What 20/20 Vision Really Means - WSJ

What Is an Analytical Essay? A Writing Guide With Examples

The Complete Guide to (Effective) Customer Analysis

What exactly is an in depth analysis? - Quora

What it means for us to actually 'see' a black hole - The Washington Post

Root Cause Analysis: Definition, Examples & Methods

What Is Generalizability?

Dunning–Kruger effect - Wikipedia

How To Perform A Gap Analysis: 5-Step Process (+ Free Template)

What Is SEO - Search Engine Optimization?