semblance vs apparition

semblance and apparition both are nouns.

Word	Noun	Adjective	Verb	Adverb
semblance	Yes	No	No	No
apparition	Yes	No	No	No

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

Other hyponyms of semblance include fantasm, phantasm, phantasma, phantom, shadow, irradiation, phantom limb.

semblance (noun)	apparition (noun)
picture consisting of a graphic image of a person or thing	an act of appearing or becoming visible unexpectedly
an outward or token appearance or form that is deliberately misleading	something existing in perception only
an erroneous mental representation	the appearance of a ghostlike figure
	a ghostly appearing figure