hendiadys

noun

1. (rhetoric)A figure of speech used for emphasis, where two words joined by and are used to express a single complex idea.

   “Some examples of hendiadys comprise two words in the bound state; others, two words in appositional hendiadys. It would seem that certain cases of appositional hendiadys are closely related to wordpairs (see WORD-PAIRS, BREAK-UP), though which way the development proceeded is far from certain.”

   “Each illustrates a different facet of verbal hendiadys in English.”