grassroots vs public

grassroots

adj
  • Of, or relating to people or society at the local level, particularly in politics, social movements, etc.; of the grass roots. 

public

adj
  • Pertaining to the people as a whole (as opposed to a private group); concerning the whole country, community etc. 

  • Able to be seen or known by everyone; open to general view, happening without concealment. 

  • Officially representing the community; carried out or funded by the state on behalf of the community. 

  • Traded publicly via a stock market. 

  • Open to all members of a community; especially, provided by national or local authorities and supported by money from taxes. 

  • Accessible to the program in general, not only to the class or any subclasses. 

noun
  • The people in general, regardless of membership of any particular group. 

  • A particular group or demographic to be targeted. 

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