What does difference mean?
A difference is a point or respect in which two or more things are not the same — a distinction that sets them apart. It is among the most frequently used abstract nouns in English, spanning everyday conversation ('What's the difference between these two?') and precise technical contexts such as mathematics, where it denotes the result of subtracting one number from another. The word can also carry a social meaning: a 'difference' may be a disagreement, as when parties settle their differences. Idiomatically, to 'make a difference' is to have a meaningful effect, while 'a world of difference' emphasizes a very large contrast. Derived from Latin roots meaning 'to carry apart', the word underscores comparison: without at least two things to compare, there can be no difference. Its versatility and neutrality make it indispensable for describing variation, contrast, and change across virtually every domain of thought and speech.
A way in which two or more people or things are not the same; a point of distinction or contrast.
"The main difference between the two proposals is cost."
Often followed by 'between' or 'in' to specify what is being compared.
A disagreement or quarrel between people.
"Despite their political differences, they remained close friends."
In mathematics, the result of subtracting one number from another; the amount by which one quantity exceeds or falls short of another.
"The difference between 15 and 9 is 6."
The plural is standard and commonly used, especially when referring to multiple points of contrast or to disputes between parties.
"The differences between the twins were subtle but noticeable."
"Difference" and "deference" differ by one letter — but only one of them means being different, and the other means yielding politely.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of difference
Difference comes from the Latin 'differentia', meaning distinction or diversity, itself derived from 'differre', meaning to carry apart or to differ, formed from 'dis-' (apart) and 'ferre' (to carry). The word entered English in the late Middle English period via Old French 'difference'. It shares its Latin root with related English words including 'differ', 'different', and 'indifferent'.
Related word forms
How difference is actually used
Common in both formal and informal registers. In British English, 'make a difference' is idiomatic for producing an effect. The plural 'differences' is often used to mean disagreements or disputes, as in 'settle their differences'.
Easily confused with difference
Deference means polite submission or respect shown to someone, while difference refers to a way in which things are not alike.