fleck vs marking

fleck and marking both are nouns.

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

As nouns, marking is a hypernym of fleck; that is, marking is a word with a broader meaning than fleck:

fleck (noun)	marking (noun)
a small contrasting part of something	evaluation of performance by assigning a grade or score
a small fragment of something broken off from the whole	the act of making a visible mark on a surface
	a pattern of marks
	a distinguishing symbol

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