luridness vs gruesomeness

luridness and gruesomeness both are nouns.

Word	Noun	Adjective	Verb	Adverb
luridness	Yes	No	No	No
gruesomeness	Yes	No	No	No

As nouns, luridness and gruesomeness are synonyms defined as:

Other synonyms of luridness include ghastliness, grimness.

luridness (noun)	gruesomeness (noun)
the quality of being ghastly	the quality of being ghastly
unnatural lack of color in the skin (as from bruising or sickness or emotional distress)
the journalistic use of subject matter that appeals to vulgar tastes