Why does smoke disperse but clouds seem to stick together?

The particles that make up smoke and clouds have important differences, which explains how they appear.

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Why does cigarette smoke swirl in continuous lines rather than dispersing in air? Is it just the shape of air current or is there a binding force? : r/askscience

Tiny fish do 'the wave' to scare off predatory birds

CLOUD DEVELOPMENT

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Tiny fish do 'the wave' to scare off predatory birds

How do clouds hang up in the sky and why are storm clouds dark? - Quora

Why do clouds 'clump' together? Wouldn't it make much more sense or be much more likely for them to distribute evenly? - Quora

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