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 conforms to a special rule, I call it an IHC. Word™.
Use the examples below to find the rule.
$$ % set Title text. (spaces around the text ARE important; do not remove.) % increase Pad value only if your entries are longer than the title bar. % \def\Pad{\P{0.0}} \def\Title{\textbf{ IHC.}\ } % \def\S#1#2{\Space{#1}{20px}{#2px}}\def\P#1{\V{#1em}}\def\V#1{\S{#1}{9}} \def\T{\Title\textbf{Words}^{\;\!™}\Pad}\def\NT{\Pad\textbf{Not}\T\ } \smash{\lower{29px}\bbox[#fcce8d]{\phantom{\rlap{rubio.2019.05.15}\S{6px}{0} \begin{array}{cc}\Pad\T&\NT\\\end{array}}}}\atop\def\V#1{\S{#1}{5}} \begin{array}{|c|c|}\hline\Pad\T&\NT\\\hline % \text{ women}&\text{ lady}\\ \hline \text{ like}&\text{ love}\\ \hline \text{ Bali}&\text{ Bintan}\\ \hline \text{ nine}&\text{ ten}\\ \hline \text{ mile}&\text{ kilometer}\\ \hline \text{ Sudan}&\text{ Kenya}\\ \hline \text{ side}&\text{ corner}\\ \hline \text{ piping}&\text{ plumbing}\\ \hline \hline \end{array}$$
CSV version:
IHC. Words™, Not IHC. Words™
women;lady
like;love
Bali;Bintan
nine;ten
mile;kilometer
Sudan;Kenya
side;corner
piping;plumbing
These are not the only examples of IHC. words™, many more exist. I'm sorry that I gave too few words but IHC. words™ are REALLY hard to find. What is the special rule these words conform to?
Hint 1:
Nothing to do with English or anything like letters, vowels, etc.
Hint 2:
More specifically, the language can ONLY be derived from the title
Hint 3:
Think backwards (Referring to the title)