earmark vs marking

earmark and marking both are nouns.

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

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

Other hypernyms of earmark include mark, marker.

earmark (noun)	marking (noun)
a distinctive characteristic or attribute of someone or something	evaluation of performance by assigning a grade or score
identification mark on the ear of a domestic animal	the act of making a visible mark on a surface
	a pattern of marks
	a distinguishing symbol

earmark (verb)	marking (verb)
give or assign a resource to a particular person or cause