farther further? how do I know which to use? who whom?
Farther means "more far/distant" in physical distance.(ex: Jen went farther than Garry could in the race)Further means "more far/distant" figuratively or non-physically, and can also mean "more/additional":(ex: "Nothing could be further from the truth" or "Who is further along in their studies?")So the difference is physical distance and non physical distance.~Ninja Jackie-sanPs: Who and whom can be determined by when you use "he" you use "who" and when you use "him" you use "whom"
The word farther is a comparative of far while further comes from an Old English word meaning "to impel". You can get its usage on http://www.elearnenglishlanguage.com/difficulties/fartherfurther.html. On the other hand, you use who when referring to the subject of a clause while whom when you are referring to the object of a clause.