Which compound nouns are we looking for here?

This is supposed to be a little riddle with and about words. We are looking for compound nouns that actually exist and the following words are hints and clues pointing to them:

  • a protruding object or pointed peg plus attentiveness
  • a sudden, sharp cracking sound or movement plus a casual conversation
  • you, me and others talking
  • a casual way of asking how someone is doing
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