and vs or

and

conj
  • Simply connecting two clauses or sentences. 

  • Introducing a parenthetical or explanatory clause. 

  • If; provided that. 

  • Used to connect more than two elements together in a chain, sometimes to stress the number of elements. 

  • connecting two well-formed formulas to create a well formed formula that requires the new formula to only be true when each of the two are true. 

  • Used to connect certain numbers: connecting units when they precede tens (not dated); connecting tens and units to hundreds, thousands etc. (now often omitted in US); to connect fractions to wholes. 

  • Connecting two identical elements, with implications of continued or infinite repetition. 

  • Introducing a qualitative difference between things having the same name; "as well as other". 

  • Used simply to connect two noun phrases, adjectives or adverbs. 

  • Used to combine numbers in addition; plus (with singular or plural verb). 

  • Introducing a clause or sentence which follows on in time or consequence from the first. 

  • Introducing the continuation of narration from a previous understood point; also used alone as a question: ‘and so what?’. 

  • Used to connect two verbs where the second is dependent on the first: ‘to’. Used especially after come, go and try. 

noun
  • Breath. 

  • Sea smoke; steam fog. 

  • In rhythm, the second half of a divided beat. 

verb
  • To breathe; whisper; devise; imagine. 

or

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

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

  • 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. 

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

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

noun
  • or 

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

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