dirtying vs maculation

dirtying and maculation both are nouns.

Word	Noun	Adjective	Verb	Adverb
dirtying	Yes	No	No	No
maculation	Yes	No	No	No

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

Other hyponyms of dirtying include spotting, staining, contamination, pollution.

dirtying (noun)	maculation (noun)
the act of soiling something	the act of spotting or staining something
	a small contrasting part of something