marking vs decoration

marking and decoration both are nouns.

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

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

marking: the act of making a visible mark on a surface
decoration: the act of decorating something (in the hope of making it more attractive)

marking (noun)	decoration (noun)
evaluation of performance by assigning a grade or score	the act of decorating something (in the hope of making it more attractive)
the act of making a visible mark on a surface	something used to beautify
a pattern of marks	an award for winning a championship or commemorating some other event
a distinguishing symbol