generally -|- general + ly  

genius -|- Geniuses Eat Noodles In Unusual Spaces.  

genre -|- Generally Entertainers Need Radio Exposure 

genuine -|- genu + ine  

gesture -|- Spell this word without jest, start it with a -g  and end it with –ure.  

government -|- the government governs us.  

grammar -|- You only want A's in grammar. 

gruesome -|- grue + some 

gymnasium -|- gym – nas- ium  

guidance -|- Guidance Ultimately Is Direction And  Never-ending Caring Encouragement. 

gauge -|- To spell this word you must gauge the -a and the -u. 

grateful -|- Who ate the L in grateful? 

guarantee -|- I guarantee there are 2 A's and 2 E's, but only one -r.