if vs or

if

conj
  • Supposing that, assuming that, in the circumstances that; used to introduce a condition or choice. 

  • Although; used to introduce a concession. 

  • Supposing that; given that; supposing it is the case that. 

  • Supposing that; used with past or past perfect subjunctive indicating that the condition is closed. 

  • Whether; used to introduce a noun clause, an indirect question, that functions as the direct object of certain verbs. 

  • Even if; even in the circumstances that. 

  • In the event that a statement is true (a programming statement that acts in a similar manner). 

  • Introducing a relevance conditional. 

noun
  • An uncertainty, possibility, condition, doubt etc. 

or

conj
  • Otherwise (a consequence of the condition that the previous is false). 

  • Connects at least two alternative words, phrases, clauses, sentences, etc., each of which could make a passage true. 

  • Connects two equivalent names. 

  • An operator denoting the disjunction of two propositions or truth values. There are two forms, the inclusive or and the exclusive or. 

  • Counts the elements before and after as two possibilities. 

adj
  • Of gold or yellow tincture on a coat of arms. 

noun
  • or 

  • The gold or yellow tincture on a coat of arms. 

prep
  • Before; ere. Followed by "ever" or "ere". 

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