exception vs elision

exception and elision both are nouns.

Word	Noun	Adjective	Verb	Adverb
exception	Yes	No	No	No
elision	Yes	No	No	No

As nouns, exception and elision are synonyms defined as:

Other synonyms of exception include exclusion.

exception (noun)	elision (noun)
a deliberate act of omission	a deliberate act of omission
an instance that does not conform to a rule or generalization	omission of a sound between two words (usually a vowel and the end of one word or the beginning of the next)
grounds for adverse criticism