# What is a Union Word™?

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

After a long period of division, tends to unite; After a long period of union, tends to divide. This has been so since antiquity. - The Three Kingdoms

If a word conforms to a special rule, I call it an Union Word™.
Use the following examples below to find the rule.

$$% set Title text. (spaces around the text ARE important; do not remove.) % increase Pad value only if your entries are longer than the title bar. % \def\Pad{\P{0.0}} \def\Title{\textbf{ Union }} % \def\S#1#2{\Space{#1}{20px}{#2px}}\def\P#1{\V{#1em}}\def\V#1{\S{#1}{9}} \def\T{\Title\textbf{Words}^{\;\!™}\Pad}\def\NT{\Pad\textbf{Not}\T\ }\displaystyle \smash{\lower{29px}\bbox[yellow]{\phantom{\rlap{rubio.2019.05.15}\S{6px}{0} \begin{array}{cc}\Pad\T&\NT\\\end{array}}}}\atop\def\V#1{\S{#1}{5}} \begin{array}{|c|c|}\hline\Pad\T&\NT\\\hline % \text{ ARGUMENT }&\text{ PARAMETER }\\ \hline \text{ DEUCE }&\text{ DRAW }\\ \hline \text{ PANASONIC }&\text{ HITACHI }\\ \hline \text{ CANESUGAR }&\text{ HONEY }\\ \hline \text{ FRAGMENT }&\text{ SCRAP }\\ \hline \text{ NORTH }&\text{ SOUTH }\\ \hline \text{ BRANCH }&\text{ DIVISION }\\ \hline \text{ INDEX }&\text{ EXPONENT }\\ \hline \text{ BELLY }&\text{ BACK }\\ \hline \text{ SAUCEPAN }&\text{ WOK }\\ \hline \end{array}$$

And, if you want to analyze, here is a CSV version:

Union Words™,Not Union Words™
ARGUMENT,PARAMETER
DEUCE,DRAW
PANASONIC,HITACHI
CANESUGAR,HONEY
FRAGMENT,SCRAP
NORTH,SOUTH
BRANCH,DIVISION
INDEX,EXPONENT
BELLY,BACK
SAUCEPAN,WOK


Hint 1:

Nation

• (I've created an easy to use template for formatting these types of puzzles; feel free to use it. See e.g. What is a Useful Word™? and hit the Edit button to get teh codez.) – Rubio Jul 25 at 12:10
• @Rubio thanks for the revision :P – Conifers Jul 25 at 13:17
• One that can only be used exclusively with other Union words, else it will go on strike? – Chronocidal Jul 26 at 9:16

A Union Word is a

Word whose first three letters are a valid Alpha-3 country code.

ARGUMENT

ARG -> Argentina

DEUCE

DEU -> Germany

PANASONIC

PAN -> Panama

CANESUGAR

FRAGMENT

FRA -> France

NORTH

NOR -> Norway

BRANCH

BRA -> Brazil

INDEX

IND -> India

BELLY

BEL -> Belgium

SAUCEPAN

SAU -> Saudi Arabia

• Are you serious? Not again! :P – Cloudy7 Jul 25 at 16:47
• Not only country code but also those example are all in the UNIted natiON :P – Conifers Aug 7 at 8:01

Here's my guess:

A Union Word™ is a word which has its first three letters align with the three-letter abbreviation of a country name.

Evidence:

Argument --> Argentina, Deuce --> Germany, Panasonic --> Panama, Canesugar --> Canada, Fragment --> France, North --> Norway, Branch --> Brazil, Index --> India, Belly --> Belize, Saucepan --> Saudi Arabia

• Great answer, but I think you've been barely ninjaed! Great minds think alike... – El-Guest Jul 25 at 16:46
• Belize was the one that initially tripped me up too -- but Belize is actually BLZ! – El-Guest Jul 25 at 16:50
• I forgot all about that nation! (I was thinking of soccer and the World Cup as I was answering the puzzle.) – Cloudy7 Jul 25 at 16:56
• But FIFA have their own, slightly different system. I like the close misses in the counterexamples: parameter and honey. – M Oehm Jul 25 at 17:02
• Parameter annoyed me because I thought it was just first three letters at first, but the first non-Union word was a counterexample! I didn’t actually realize the official ones were PRY and HND for those two, respectively. – El-Guest Jul 25 at 18:36