What does the word interchangeable mean?

Usage examples for interchangeable

  1. Some of these books try to deceive us into supposing that capital and ability are interchangeable terms. – Britain for the British by Robert Blatchford
  2. Perhaps these are interchangeable terms, he said, with the angry smile she knew so well; but without discussing that matter I am determined that this business shall go no farther. – A Country Gentleman and his Family by Mrs. (Margaret) Oliphant
  3. Interchangeable consonants are many. – Legends of Ma-ui--a demi god of Polynesia, and of his mother Hina by W. D. Westervelt