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.
If a word has a certain property, I call it a Right-wing Word™.
You can use the examples below to find the property:
$$\begin{array}{|c|c|} \hline \textbf{Right-wing Words™}&\textbf{Not Right-wing Words™}\\ \hline \text{ARM}&\text{HAND}\\ \hline \text{BUMP}&\text{JERK}\\ \hline \text{SECT}&\text{CASTE}\\ \hline \text{CHILL}&\text{WARMTH}\\ \hline \text{ACT}&\text{REAL}\\ \hline \text{CRIMP}&\text{CURL}\\ \hline \text{SWIM}&\text{DIVE}\\ \hline \text{DRILL}&\text{PUNCH}\\ \hline \text{KILL}&\text{MURDER}\\ \hline \text{ASSERT}&\text{HIDE}\\ \hline \text{SERUM}&\text{PILL}\\ \hline \hline \text{JUMP*}&\text{LEAP}\\ \hline \end{array} $$
For those without MathJax, or if you want to pop this into a spreadsheet, here is a CSV version:
Right-wing™,Not Right-wing™ ARM,HAND BUMP,JERK SECT,CASTE CHILL,WARMTH ACT,REAL CRIMP,CURL SWIM,DIVE DRILL,PUNCH KILL,MURDER ASSERT,HIDE SERUM,PILL JUMP*,LEAP *- Only just a Right-Wing Word
P.S. my first puzzle. So, Do give your views.