viscidness vs gumminess

viscidness and gumminess both are nouns.

Word	Noun	Adjective	Verb	Adverb
viscidness	Yes	No	No	No
gumminess	Yes	No	No	No

As nouns, viscidness and gumminess are synonyms defined as:

Other synonyms of viscidness include cohesiveness, glueyness, gluiness, ropiness, tackiness, viscidity.

viscidness (noun)	gumminess (noun)
the property of being cohesive and sticky	the property of being cohesive and sticky