interposition vs interpolation

interposition and interpolation both are nouns.

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

As nouns, interposition and interpolation are synonyms defined as:

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

Other synonyms of interposition include interjection, interpellation.

interposition (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
the act or fact of interposing one thing between or among others	(mathematics) calculation of the value of a function between the values already known
	a message (spoken or written) that is introduced or inserted