reciprocation

re·cip·ro·ca·tion
UK: /ɹɪsˌɪpɹəkˈe‍ɪʃən/  
nafnorð
  • hreyfing fram og aftur
  • skipti á gjöfum (reciprocation of presents)
  • svar, samsvörun

Samheiti: give-and-take, interchange