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Original · left

Diffusion (physics)

First in use: c. 1855
Duplicate · right

Diffusion model

First in use: c. 2015

Diffusion / Diffusion (physics) / Diffusion model

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Duplicate share · 12 mo—
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Fick's law vs. Stable Diffusion.

Which meaning of Diffusion is the original, and which one is the duplicate riding on its name? Diffusion (physics) came first (c. 1855). Diffusion model arrived in 2015. The data below shows which one owns the word now.

Wikipedia pageviews since 2015

Diffusion (physics)Diffusion model
English Wikipedia pageviews since July 2015 load here.

Duplicate's share of attention

Green line = duplicate's % · above 60 it owns the word · below 40 the original does

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The case for each meaning

Sourced definitions, usage stats and quotes

Original · c. 1855

Diffusion (physics)

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Duplicate · c. 2015

Diffusion model

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More duplicated terms

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