different between toasting vs coasting

English

toasting

toasting (plural toastings)

The action of making a toast (celebratory call to drink).
The heating of oak panels used to make wine barrels.
The process by which something, such as bread, is toasted.
- 2011, Johnny Ball, Ball of Confusion: Puzzles, Problems and Perplexing Posers (page 129)
  You only have a grill and space for 2 pieces of bread under it. So it takes 4 toastings to do 3 slices on both sides. Or does it? Can you toast 3 pieces of bread on both sides in less than 4 toastings?

coasting

coasting (countable and uncountable, plural coastings)

The act of sailing along a coast, or from port to port.
- 1772, A Select Collection of Letters of the Late Reverend George Whitefield (page 390)
  Glory be to God, all sublunary coastings will soon be over. Yet a little while, and we shall get into an eternal harbour.
The act of an already moving vehicle rolling along without use of power for a short distance.

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