coiner

Short definition from Wiktionary

Noun

1. 1
   A person who makes coins (often counterfeit coins).
2. 2
   A person who invents words or phrases.
3. 3
   A person who invents or fabricates (stories, lies, etc.).
4. 4
   A person who invests in or advocates for cryptocurrencies.

Proper noun

1. 1
   A surname.