If a word conforms to a special rule, I call it an Area Word™.
Use the following examples below to find the rule.
|Area Words™||Not Area Words™|
And, if you want to analyze, here is a CSV version: (If you copy this text elsewhere, make sure that your font matches the one in the image above.)
Area Words™,Not Area Words™ ARC,CIRCLE BUG,MOTH CANDLE,LIGHTER DROP,FALL EARTH,WATER FATHER,SISTER GUAVA,BANANA HEXAGON,HEPTAGON ISLAND,IRELAND JACKAL,WOLF PHONE,MOBILE SANDY,BEACH VINEGAR,SODA
Bonus: I forgot to mention that my little brother had organised two of the words in their respective incorrect groups of the words. I can, however, confirm that those two words makes another compound word. Can you find that word? :)