ruminator vs muser

ruminator and muser both are nouns.

Word	Noun	Adjective	Verb	Adverb
ruminator	Yes	No	No	No
muser	Yes	No	No	No

As nouns, ruminator and muser are synonyms defined as:

ruminator and muser: a reflective thinker characterized by quiet contemplation

Other synonyms of ruminator include muller, ponderer.

ruminator (noun)	muser (noun)
a reflective thinker characterized by quiet contemplation	a reflective thinker characterized by quiet contemplation