* "Muse": This is a common word that refers to a source of inspiration, especially in artistic or creative endeavors. A muse can be a person, a place, an object, or even an abstract concept.
* "Muser": This could be a made-up word. If you heard it somewhere, it's possible it was used in a specific context and had a unique meaning.
* "Music": This is a common word, and perhaps you meant to say "musician" which refers to someone who plays music.
To help me understand what you mean by "muser," please provide more context. For example:
* Where did you hear this word?
* What was the situation?
* What did the person who used the word mean?
With more information, I can help you figure out what "muser" might mean.