hallmark vs marking

hallmark and marking both are nouns.

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

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

hallmark: a mark on an article of trade to indicate its origin and authenticity
marking: a distinguishing symbol

Other hypernyms of hallmark include mark, marker.

hallmark (noun)	marking (noun)
a distinctive characteristic or attribute of someone or something	evaluation of performance by assigning a grade or score
a mark on an article of trade to indicate its origin and authenticity	the act of making a visible mark on a surface
	a pattern of marks
	a distinguishing symbol