| 100% | BORDERS | 7 | Ends or lines that separate countries |
| 67% | FRONTIER | 8 | Line or border that separates two countries |
| 46% | EQUATOR | 7 | Line that separates North and South hemispheres |
| 45% | HORIZON | 7 | Line that separates the sky from the earth |
| 44% | PUNCH | 5 | Line that ends a joke |
| 44% | TSARS | 5 | Line that ended in 1917 |
| 43% | TSARS | 5 | Line that ended with Nicholas II |
| 42% | STRAIGHT | 8 | Line that's not curvy or angled |
| 41% | BORDER | 6 | Line separating two countries |
| 40% | HORIZON | 7 | Line that appears to separate the sea from the sky |
| 39% | COLOMBIA | 8 | Country that Panama separated from in 1903 |
| 38% | PERU | 4 | Country that’s home to the Nazca Lines |
| 38% | RACES | 5 | Contests that end at finish lines |
| 38% | GARANIMALS | 10 | Children’s clothing line that specializes in mix-and-match separates |
| 38% | EST | 3 | Ending that can follow thick or fast or slow |
| 38% | ESE | 3 | Ending that can turn a country into a language |
| 38% | STAN | 4 | Persian suffix that ends seven country names |
| 37% | ISH | 3 | Word ending that means "more or less" |
| 37% | EXOGAMY | 7 | Marriage that links two separate groups or tribes |
| 37% | DANUBE | 6 | River that flows through or beside 10 countries |
| 37% | ALLY | 4 | Person or country that's on your side |
| 37% | OLIGARCHY | 9 | Small group that controls a country or business |
| 37% | LIP | 3 | Face part that can be lined or plumped |
| 37% | THREAT | 6 | Menacing statement that might end with "... or else!" |
| 37% | ACE | 3 | Card that can begin or end a straight |
| 37% | DIMINUTIVE | 10 | Word that might end in -ie or -ling |
| 36% | DOMAIN | 6 | Name that often ends in .org, .com or .edu |
| 35% | SIDEPROJECT | 11 | Venture that's separate from a main line of work |
| 35% | ASIA | 4 | Continent that includes seven countries whose names end in "-stan" |
| 35% | GROSS | 5 | Word that means "icky or repulsive" and ends with "ss" |