This puzzle is based off the What is a Word™ and What is a Phrase™ series started by JLee and their spin-off What is a Number™ series.
If a word conforms to a certain rule, I call it a Croupier's Word™. Use the following examples to find the rule:
$$ % set Title text. (spaces around the text ARE important; do not remove.) % increase Pad value only if your entries are longer than the title bar. % \def\Pad{\P{1.0}} \def\Title{\textbf{ Croupier's }} % \def\S#1#2{\Space{#1}{20px}{#2px}}\def\P#1{\V{#1em}}\ \def\V#1{\S{#1}{9}} \def\T{\Title\textbf{Words}^{\;\!™}\Pad}\def\NT{\Pad\textbf{Not}\T\ }\displaystyle \smash{\lower{29px}\bbox[yellow]{\phantom{\rlap{rubio.2018.03.05}\S{6px}{0} \begin{array}{cc}\Pad\T&\NT\\\end{array}}}}\atop\def\V#1{\S{#1}{5}} \begin{array}{|c|c|}\hline\Pad\T&\NT\\\hline % \text{GOTHS}&\text{HIPSTERS}\\ \hline \text{FUTON}&\text{TATAMI}\\ \hline \text{TRASHED}&\text{SOBER}\\ \hline \text{CONSOLES}&\text{COMPUTERS}\\ \hline \text{OLDIE}&\text{GOLDIE}\\ \hline \text{HATERS}&\text{LOVERS}\\ \hline \text{TASER}&\text{MACE}\\ \hline \text{STRAYS}&\text{STAYS}\\ \hline \text{BASED}&\text{DEBASED}\\ \hline \text{GENRE}&\text{SUBGENRE}\\ \hline \text{WIDER}&\text{NARROWER}\\ \hline \text{FAULTS}&\text{STRENGTHS}\\ \hline \end{array}$$
The puzzle satisfies the series' inbuilt assumption, that each word can be tested for whether it is a Croupier's Word™ without relying on the other words.
These are not the only examples, there are more of both Croupier's Words™ and Not Croupier's Words™.
CSV version:
GOTHS,HIPSTERS FUTON,TATAMI TRASHED,SOBER CONSOLES,COMPUTERS OLDIE,GOLDIE HATERS,LOVERS TASER,MACE STRAYS,STAYS BASED,DEBASED GENRE,SUBGENRE WIDER,NARROWER FAULTS,STRENGTHS