Hendiadys—hen-DYE-uh-dus—is the use of two words joined by “and” to express one idea. The term comes through Latin from Greek hen dia duoin: “one thing by two.”
An original example: “The audit found waste and confusion,” where the intended sense is confused wastefulness. In a sentence: “Her hendiadys made the failure sound larger by giving one condition two beats.” Oxford Learner’s Dictionaries.