imperative vs ordinary

imperative

noun
  • The grammatical mood expressing an order (see jussive). In English, the imperative form of a verb is the same as that of the bare infinitive. 

  • A verb in imperative mood. 

  • An essential action, a must: something which is imperative. 

adj
  • Having semantics that incorporates mutable variables. 

  • Expressing a command; authoritatively or absolutely directive. 

  • Essential; crucial; extremely important. 

  • Of, or relating to the imperative mood. 

ordinary

noun
  • The usual course of things; normal condition or health; a standard way of behaviour or action. 

  • One of the standard geometric designs placed across the center of a coat of arms, such as a pale or fess. 

  • A part of the Christian liturgy that is reasonably constant without regard to the date on which the service is performed. 

  • A rule, or book of rules, prescribing the order of service, especially of Mass. 

  • A person having immediate jurisdiction in a given case of ecclesiastical law, such as the bishop within a diocese. 

  • The chaplain of Newgate prison, who prepared condemned prisoners for death. 

  • A meal provided for a set price at an eating establishment. 

  • A penny farthing bicycle. 

  • A judge with the authority to deal with cases himself or herself rather than by delegation. 

  • An ordinary person or thing; something commonplace. 

adj
  • Having no special characteristics or function; everyday, common, mundane; often deprecatory. 

  • Being part of the natural order of things; normal, customary, routine. 

  • Having regular jurisdiction; now only used in certain phrases. 

  • Bad or undesirable. 

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