# What is a Digital Word™?

This puzzle is based off the What is a Word™ and What is a Phrase™ series started by JLee.

Digital Words™ are words that follow a certain rule. If a word follows this rule, it is a Digital Word™.

Digital Words™ Not Digital Words™
DAUGHTER SON
PEAR MANGO
RAPIER CUTLASS
FIVE FOUR
EGYPT CHINA
BIRDWATCHES STARGAZES
TAX TACKS
HUBCAP KNEECAP
VERTEBRATE INVERTEBRATE
PEPSI COKE
TEST QUIZ
REGGAE COUNTRY
DEDUCE EVALUATE
RED BLUE
EXPIRE EMPIRE
RIGHT WRONG

The puzzle satisfies the series' inbuilt assumption, that each word can be tested for whether it is a Digital Word™ without relying on the other words.

These are not the only examples of Digital Words™, many more exist.

CSV version:

Digital Words™,Not Digital Words™
DAUGHTER,SON
PEAR,MANGO
RAPIER,CUTLASS
FIVE,FOUR
EGYPT,CHINA
BIRDWATCHES,STARGAZES
TAX,TACKS
HUBCAP,KNEECAP
VERTEBRATE,INVERTEBRATE
PEPSI,COKE
TEST,QUIZ
REGGAE,COUNTRY
DEDUCE,EVALUATE
RED,BLUE
EXPIRE,EMPIRE
RIGHT,WRONG


What makes a word a Digital Word™?

• Are you sure KISS is a digital word? If not, I've found something. – Glorfindel Jun 10 '18 at 16:30
• I found the same thing, and I have reason to believe @Glorfindel is correct. – Bass Jun 10 '18 at 16:50