Ctrl + Y is the command for "undo" if you like using keyboard commands.
Ctrl + Shift + Y will search for the last word that you were looking for as part of the "Find" function.
As for keyboard associated words, Yoko-gumi is a word that is used for combining characters.
bunny
Words beginning with the letter A that have ghostly meanings include:apparitionapparitions
Some three letter words beginning with D are:diddogdoediedendindabduodotdigdrydye
Some five letter words beginning with F are:favorfirstfaithfilthfloorflameflukeframefrailforgefurorflood
Some six letter words beginning with e are:eatingerodesearwigearwaxelopedeitherextortexertsemesisemulgeeponymeagletearfulequate
four letter words beginning wih d are: Dart
3 letter words that begin with the letter a:aceactaddageaidaimairaleallalpampandantanyapeaptarcarearmartaskateaweaxe
5 letter words beginning with g ending with L:grillgrowl
Some four letter words beginning with TO are:toadtoiltoldtolltooktooltoottorntosstorttourtown
Some 'qu' words beginning with the letter 'I' are:inquestinquiryinequityinquisitiveIroquois
Positive words beginning with 'n' include:nicenobleneatnourishingnurturing
Eight letter words beginning with N:namelessnamesakenarratornarrowlynasalitynationalnauseatenavigateneatnessnecklacenecklinenecktiesneedlessneglectsnegligeeneighborneutralsneutronsnewscastnewlywednineteennitrogennoblemannominatenondairynonsensenormalcynorthernnotebooknotified