brown noser vs suck up

brown noser

noun
  • One who brownnoses (flatters or humors somebody in an obsequious manner for personal gain); one who sucks up; a bootlicker, ass-kisser, sycophant. 

suck up

verb
  • To absorb (fluid). 

  • To fellate (a person) 

  • To adulate or flatter somebody excessively, generally to obtain some personal benefit or favour. 

How often have the words brown noser and suck up occurred in a corpus of books? (source: Google Ngram Viewer )