by a wide margin vs somewhat

by a wide margin

adv

  • Synonym of by far 

somewhat

adv

  • Very. 

  • To a limited extent or degree. 

noun

  • More or less; a certain quantity or degree; a part, more or less; something. 

  • A person or thing of importance; a somebody. 

How often have the words by a wide margin and somewhat occurred in a corpus of books? (source: Google Ngram Viewer )