no vs whatever

no

intj
  • mild disapproval 

  • vehement rejection of truthfulness 

  • disgust 

det
  • Not any. 

  • Hardly any. 

  • Not (a); not properly, not really; not fully. 

  • Not any possibility or allowance of (doing something). 

prep
  • not, does not, do not, etc. 

  • without 

  • like 

noun
  • a negating expression; an answer that shows disagreement, denial, refusal, or disapproval 

  • a vote not in favor, or opposing a proposition 

adv
  • Used before different, before comparatives with more and less, and idiomatically before other comparatives. 

  • not 

  • Used idiomatically before certain other adjectives. 

particle
  • Used to show disagreement, negation, denial, refusal, or prohibition. 

  • Used together with an affirmative word or phrase to show agreement. 

  • Used to show agreement with a negative question. 

whatever

intj
  • A holophrastic expression used to dismiss something that the speaker doesn't care about, doesn't think important, or doesn't want to consider or discuss any further. 

adv
  • In what way; to what extent. 

  • At all; in any way; whatsoever. 

noun
  • Something whose exact kind or nature is unimportant; a thingy. 

pron
  • Anything; thing(s) of unspecified kind, or no matter what kind; sometimes used to indicate that the speaker does not care about options. 

  • Anything that; all that. 

  • Regardless of anything that. 

  • What ever; emphasised form of 'what', used to ask which thing, event, circumstance, etc. 

det
  • What ever; emphatic form of 'what'. 

  • Regardless of the ... that; for any ... that. 

  • Any ... that; of no matter what type or kind that. 

  • Any; of no matter what type or kind. 

adj
  • Unexceptional or unimportant; blah. 

How often have the words no and whatever occurred in a corpus of books? (source: Google Ngram Viewer )