Fuse and integrate both make parts into one, with a difference in what happens to them. Fuse is to join things into one by melting them together, so the seam vanishes and they become inseparable. Integrate is to bring parts into a whole so that they work together as one, with the parts staying distinct. Fuse melts the parts into one; integrate keeps them working together.
Both make a whole, but fuse erases the parts and integrate keeps them working. Fuse, from Latin fundere 'to pour, melt', joins things by melting them together until there is no seam. Integrate, from integrare 'to make whole', fits parts so they operate as one system while staying distinct, or brings a person into full membership. Two metals fuse into one at heat; a new system is integrated so every part runs together. One melts the parts into one; the other keeps them separate but functioning as one.
fuse
To fuse is to join two things into one by melting them together, so completely that the boundary is gone — metals fuse under heat, and by extension genres, ideas, and cultures fuse into something new. From the Latin fundere 'to pour or melt'. The same spelling names a very different noun: a fuse is the thin wire in a circuit that melts and breaks when the current runs too high. Where two edges coalesce under heat they fuse; unlike things that merely diverge, what is fused cannot be pulled apart.
integrate
To integrate is to bring parts together so they function as one whole — from the Latin integrare, 'to make whole'. New software integrates with your calendar; a recruit integrates into a team; separated groups integrate into shared, equal community life. What is integrated stops being an add-on and becomes a working part of the system, the way a gear that meshes lets the whole train turn. It is stronger than to combine: the parts do not just sit together, they work together.
| fuse | integrate | |
|---|---|---|
| Meaning | join into one by melting; weld | fit parts into one working whole; include |
| The parts | melt into one, seam gone | stay distinct but work together |
| How | melting, with heat | fitting so they function as one |
| Often with | metals, genres, atoms, ideas | systems, communities, data, immigrants |
| Noun | fusion | integration |
| Example | The metals fused. | Integrate the systems. |
Ask whether the parts melt into one or stay working together. Fuse melts them until the seam is gone and they cannot be told apart — two plates welded into one sheet. Integrate keeps the parts distinct but makes them function as one — a gear setting the row turning. If parts melt into one inseparable mass, they fuse; if they are fitted so they work as one while staying distinct, they integrate.
fuse
- iThe two metals fuse at a high enough temperature.
- iiThe band fuses jazz and folk into one sound.
- iiiIn the sun's core, hydrogen nuclei fuse into helium.
integrate
- iThe company integrated the new software into its systems.
- iiSchools help newcomers integrate into the community.
- iiiThe design integrates storage into the walls.
Fuse melts the parts into one seamless mass; integrate keeps them distinct but makes them work as one, and carries a social sense — integrating people as equals — that fuse lacks. Fused metals are one substance; integrated parts are still parts, running together. One erases the seam; the other keeps it and makes it work.
A precise pair for science and social writing. Fuse suits a total, heat-driven union — 'metals fuse', 'hydrogen fuses into helium'. Integrate suits parts made to work together while staying distinct — 'integrate the software', 'integrate renewable power' — or people joining a society as equals. Examiners reward the difference: fusion melts into one, integration keeps the parts working as one. The nouns are fusion and integration.