inflexibly vs securely

inflexibly

adv
  • With a firmness that resists all importunity or persuasion; in an inflexible, unyielding or immovable manner; relentlessly. 

securely

adv
  • In a secure manner; without fear or apprehension; without danger 

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