centralization vs heed

centralization

noun
  • The act or process of centralizing, or the state of being centralized; the act or process of combining or reducing several parts into a whole 

heed

verb
  • To mind; to regard with care; to take notice of; to attend to; to observe. 

noun
  • Careful attention. 

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