cairn vs marking

cairn and marking both are nouns.

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

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

cairn: a mound of stones piled up as a memorial or to mark a boundary or path
marking: a distinguishing symbol

Other hypernyms of cairn include mark, marker.

cairn (noun)	marking (noun)
small rough-haired breed of terrier from Scotland	evaluation of performance by assigning a grade or score
a mound of stones piled up as a memorial or to mark a boundary or path	the act of making a visible mark on a surface
	a pattern of marks
	a distinguishing symbol