fleck vs sunspot

fleck and sunspot both are nouns.

Word	Noun	Adjective	Verb	Adverb
fleck	Yes	No	Yes	No
sunspot	Yes	No	No	No

As nouns, sunspot is a hyponym of fleck; that is, sunspot is a word with a more specific, narrower meaning than fleck:

fleck: a small contrasting part of something
sunspot: a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field

fleck (noun)	sunspot (noun)
a small contrasting part of something	a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field
a small fragment of something broken off from the whole

fleck (verb)	sunspot (verb)
make a spot or mark onto