Combine and merge both bring things together into one, with a key difference. Combine is to bring separate things together into one set, where each part keeps its own identity. Merge is for separate things to combine so completely that they become one, losing their separate identity. Combine gathers things that stay distinct; merge fuses them into one.
Both join into one, but combine keeps the parts and merge dissolves them. Combine, from com- 'together', brings separate things into a single set — you combine the ingredients, and each is still itself. Merge, from mergere 'to plunge', has them become one, one absorbed into the other. You combine two lists; two lanes merge into one. One is a set of distinct parts; the other a single thing where two used to be.
combine
To combine is to bring two or more things together so they work or count as one — combine ingredients, combine forces, combine two datasets. From the Latin com- 'together' and bini 'two by two'. What is combined is pooled for a purpose, but the parts often stay distinguishable, unlike things that merge or fuse into a single body. As a noun, with the stress moved to the front, a combine is the farm machine that combines reaping, threshing, and gathering into one pass.
merge
To merge is for two separate things to come together into one — lanes of traffic merge, companies merge, datasets merge. From the Latin mergere 'to plunge or dip', it once meant to sink in, and still carries that sense of one thing taken into another until they are no longer separate. When two firms merge they form a single company; where two rivers merge, one name usually wins. To merge is a broader, often deliberate move than to coalesce, and a close relative of consolidate.
| combine | merge | |
|---|---|---|
| Meaning | bring together into one set | combine into one, identity lost |
| The parts | kept, each still itself | absorbed into the whole |
| Result | one set of distinct parts | one thing where there were two |
| Often with | ingredients, forces, ideas, data | lanes, companies, files, colours |
| Noun | combination | a merger / merging |
| Example | Combine the two lists. | The two lists were merged. |
Ask whether the parts survive. Combine keeps them — berries and oats share a bowl, each still itself. Merge loses them — two lanes become a single line you cannot split back into the original cars-in-lanes. If separate things are gathered but stay distinct, that is combine; if they become one and lose their edges, that is merge.
combine
- iCombine the two shopping lists into one.
- iiThe dish combines sweet and salty flavours.
- iiiSeveral factors combined to cause the delay.
merge
- iThe two lanes merge just after the bridge.
- iiThe two firms merged into one company.
- iiiMerge the two files into a single document.
The tell is whether the parts stay distinct. When things combine, you can still pick them out within the set; when they merge, they become one and the line between them is gone. In computing the two even overlap — 'merge the files' and 'combine the data' — but merge stresses one seamless result, combine a set that keeps its parts.
A high-value pair for data, science and business writing. Use combine when the parts stay identifiable — 'combine the two datasets side by side', 'a combination of skills' — and merge when they become one — 'merge the records into a single table', 'the firms merged'. The tell examiners notice: combined things can be separated again, merged things cannot. Merge takes 'with' or 'into' and gives merger; combine takes 'with' and gives combination. In computing both appear, but merge implies reconciling into one.