This puzzle is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.

I also want to thank a math teacher who shared this riddle when I was in a high school. This riddle is a variation.

For each number from 1 to 9, there exist corresponding K-words™. Here are examples and non-examples:

$$ \begin{array}{l|l|l} & \text{K-words™} & \text{Not K-words™} \\ \hline \text{1st} & \text{Japan} & \text{Korea} \\ \text{2nd} & \text{Yttrium} & \text{Scandium} \\ \text{3rd} & \text{Uncle} & \text{Father} \\ \text{4th} & \text{Deception} & \text{Violence} \\ \text{5th} & \text{Duck} & \text{Chicken} \\ \text{6th} & \text{Army} & \text{Navy} \\ \text{7th} & \text{Blackboard} & \text{Chalk} \\ \text{8th} & \text{Arm} & \text{Leg} \end{array} $$

The objective is to give an example of a 9th K-word™.

For anyone who need it, here is a CSV version:

1st Japan      Korea
2nd Yttrium    Scandium
3rd Uncle      Father
4th Deception  Violence
5th Duck       Chicken
6th Army       Navy
7th Blackboard Chalk
8th Arm        Leg

(Though, you don't need a CSV version. A dictionary suffices.)

Subtle Hint:

Other examples and non-examples of K-words™:

     K-words       Not K-words
 1st Solar eclipse Lunar eclipse
 2nd Tooth         Tongue
 3rd Samsung       Apple
 4th Human         Alien
 5th Error         Success
 6th Carnivore     Herbivore
 7th Chile         Argentina
 8th Octagon       Circle

Moderate Hint:

Somehow, K-words™ start with their assigned number.

Decisive Hint:

One of the non-examples is a crucial clue.

  • 1
    $\begingroup$ Are the listed ones the only existing k-words ? $\endgroup$ – melfnt Feb 14 '20 at 13:12
  • $\begingroup$ @melfnt No, those are just examples. $\endgroup$ – Dannyu NDos Feb 14 '20 at 14:26
  • 4
    $\begingroup$ Are the listed on the right one, not K-words at all? Or they are K-words but not on the correct number? $\endgroup$ – athin Feb 14 '20 at 14:36
  • 9
    $\begingroup$ For the record, a CSV (“Comma Separated Values”) version would, er, generally contain commas :) $\endgroup$ – Rubio Feb 14 '20 at 16:07
  • $\begingroup$ @athin They are not K-words at all, and don't assign to a number. $\endgroup$ – Dannyu NDos Feb 14 '20 at 21:27

The rule of K-words™ is:

When we translate them into Korean, their first letter means a digit.



If you want to copy & paste Korean words:

일본, 한국
일식, 월식
이트륨, 스칸듐
이, 혀
삼촌, 아버지
삼성, 애플
사기, 폭력
사람, 외계인
오리, 닭
오류, 성공
육군, 해군
육식, 초식
칠판, 분필
칠레, 아르헨티나
팔, 다리
팔각형, 원

Examples of 9th K-words™:

Sphere(구), Google(구글), Cloud(구름), and infinitely more.

Some note:

An English word can be translated into many Koreans words, so I chose the words carefully to fit them in the rule. For example, I didn't translated Army to 군대 or Alien to 이방인. Especially, I didn't translated Apple to 사과 because I treated it as a proper name.

  • $\begingroup$ Sorry, l can't access Wikipedia. $\endgroup$ – Scratch---Cat May 13 '20 at 2:18

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