deception vs illusion

deception and illusion both are nouns.

Word	Noun	Adjective	Verb	Adverb
deception	Yes	No	No	No
illusion	Yes	No	No	No

As nouns, illusion is a hyponym of deception; that is, illusion is a word with a more specific, narrower meaning than deception:

As nouns, deception and illusion are synonyms defined as:

deception and illusion: an illusory feat; considered magical by naive observers

Other synonyms of deception include conjuration, conjuring trick, legerdemain, magic, magic trick, thaumaturgy, trick.

deception (noun)	illusion (noun)
the act of deceiving	the act of deluding; deception by creating illusory ideas
an illusory feat; considered magical by naive observers	an illusory feat; considered magical by naive observers
a misleading falsehood	something many people believe that is false
	an erroneous mental representation