basically vs on average

basically

adv
  • in a fundamental, essential or basic manner 

  • mostly; generally; for the most part 

  • used to refer to the most important or fundamental point the speaker is making; sometimes tending towards a meaningless filler word 

on average

prep
  • Expressed as a measure of central tendency (usually the arithmetic mean). 

  • Usually, typically; as a rule; as often as not. 

How often have the words basically and on average occurred in a corpus of books? (source: Google Ngram Viewer )