Year-on-year or year-over-year?
year-on-year is an adjective meaning “Alternative form of year-over-year”; year-over-year is an adjective meaning “Compared to the same time period in the previous year (for example, monthly…”.
What is the difference between year-on-year and year-over-year?
| year-on-year | year-over-year | |
|---|---|---|
| Part of speech | adjective | adjective |
| Meaning | Alternative form of year-over-year | Compared to the same time period in the previous year (for example, monthly inflation) |
| Example | none recorded | none recorded |
| Pronunciation | not recorded | not recorded |
| In writing | not counted (the list counts single words) | not counted (the list counts single words) |
Sources: year-on-year and year-over-year in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Every current meaning of year-on-year and year-over-year
year-on-year
- 1
Alternative form of year-over-year
year-over-year
- 1
Compared to the same time period in the previous year (for example, monthly inflation)
Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.
How many people search year-on-year vs year-over-year?
“year-on-year vs year-over-year” is searched about 50 times a month on Google and 10 on Bing in the United States. Google counts close variants of a query together (“year-over-year vs year-on-year”, “year-on-year or year-over-year”).
Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.