muller vs ponderer

muller and ponderer both are nouns.

Word	Noun	Adjective	Verb	Adverb
muller	Yes	No	No	No
ponderer	Yes	No	No	No

As nouns, muller and ponderer are synonyms defined as:

muller and ponderer: a reflective thinker characterized by quiet contemplation

Other synonyms of muller include muser, ruminator.

muller (noun)	ponderer (noun)
a heavy tool of stone or iron (usually with a flat base and a handle) that is used to grind and mix material (as grain or drugs or pigments) against a slab of stone	a reflective thinker characterized by quiet contemplation
a vessel in which wine is mulled
a reflective thinker characterized by quiet contemplation