viscous vs gluey

viscous and gluey both are adjectives.

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

As adjectives, viscous and gluey are synonyms defined as:

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

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