Interjection
Part of speech: noun
Definition: An exclamation or filled pause; a word or phrase with no particular grammatical relation to a sentence, often an expression of emotion. An interruption; something interjected
Interpolation
Part of speech: noun
Definition: An abrupt change in elements, with continuation of the first idea.In mathematics and science: the process of estimating the value of a function at a point from its values at nearby points.The process of including and processing externally-fetched data in a document or program; see interpolate.