gluey vs viscous

gluey and viscous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
gluey	No	Yes	No	No
viscous	No	Yes	No	No

As adjectives, gluey and viscous are synonyms defined as:

Other synonyms of gluey include glutinous, gummy, mucilaginous, pasty, sticky, viscid.

gluey (adjective)	viscous (adjective)
having the sticky properties of an adhesive	having the sticky properties of an adhesive
	having a relatively high resistance to flow