marking vs fleck

marking and fleck both are nouns.

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

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

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

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