interjection vs interpolation

interjection and interpolation both are nouns.

Word	Noun	Adjective	Verb	Adverb
interjection	Yes	No	No	No
interpolation	Yes	No	No	No

As nouns, interjection and interpolation are synonyms defined as:

interjection and interpolation: the action of interjecting or interposing an action or remark that interrupts

Other synonyms of interjection include interpellation, interposition.

interjection (noun)	interpolation (noun)
the action of interjecting or interposing an action or remark that interrupts	the action of interjecting or interposing an action or remark that interrupts
an abrupt emphatic exclamation expressing emotion	(mathematics) calculation of the value of a function between the values already known
	a message (spoken or written) that is introduced or inserted