beating (n.)youdaoicibaDictYouDict[beating 词源字典]
c. 1200, beatunge "action of inflicting blows," verbal noun from beat (v.). Meaning "pulsation" is recorded from c. 1600.[beating etymology, beating origin, 英语词源]
cheating (n.)youdaoicibaDictYouDict
"deceptiveness, swindling," 1530s, verbal noun from cheat (v.).
heating (n.)youdaoicibaDictYouDict
"action of making hot," late 14c., verbal noun from heat (v.).