viscous vs sticky

viscous and sticky both are adjectives.

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

As adjectives, viscous and sticky are synonyms defined as:

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

viscous (adjective)	sticky (adjective)
having the sticky properties of an adhesive	having the sticky properties of an adhesive
having a relatively high resistance to flow	hard to deal with; especially causing pain or embarrassment
	covered with an adhesive material
	hot or warm and humid
	moist as with undried perspiration and with clothing sticking to the body