sunspot vs speckle

sunspot and speckle both are nouns.

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

As nouns, speckle is a hypernym of sunspot; that is, speckle is a word with a broader meaning than sunspot:

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

Other hypernyms of sunspot include dapple, fleck, maculation, patch, spot.

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

sunspot (verb)	speckle (verb)
	mark with small spots
	produce a mottled effect