> Unique does not mean important.
Thank you. This seems to have elicited a clarification from the other user, which I appreciate.
> It means hard to find elsewhere.
Well…"not found elsewhere". It's "the only instance within a given set".
You'll sometimes (perhaps increasingly?) encounter "more unique", "most unique", or similar. These usages dilute the meaning of 'unique' and make it more like 'unusal' or 'rare'. People who use 'unique' this way tend to resort to longer phrases to express 'unique'. Perhaps somebody knows a newer word for expressing 'unique'?