muller vs thinker

muller and thinker both are nouns.

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

As nouns, thinker is a hypernym of muller; that is, thinker is a word with a broader meaning than muller:

muller: a reflective thinker characterized by quiet contemplation
thinker: someone who exercises the mind (usually in an effort to reach a decision)

muller (noun)	thinker (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	an important intellectual
a vessel in which wine is mulled	someone who exercises the mind (usually in an effort to reach a decision)
a reflective thinker characterized by quiet contemplation