This puzzle is based off the What is a Word™ series started by JLee
If a word satisfies a certain property it is called a Dual Word. Here are some examples:
|Dual Words||Not Dual Words|
Dual Words,Not Dual Words BARRED,BANNED DEAR,FRIEND FLOE,FLUE KNIT,STITCH MIND,MATTER PAUSE,REWIND PEAK,LOOK REAL,FAKE TEAM,WON THYME,FLAX TIED,BAWLED
What is the rule to tell whether a word is Dual or not?
(Note that each word can be tested for whether it is Dual on its own, without looking at any of the other words in the list of examples. The vast majority of English words are not dual.)