illation -
the reasoning involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observation
analogy drawing a comparison in order to show a similarity in some respect; "the operation of a computer presents and interesting analogy to the working of the brain"; "the models show by analogy how matter is built up"
corollary (logic) an inference that follows directly from the proof of another proposition
derivation the act of deriving something or obtaining something from a source or origin
