Definition of "Farther" :

adjective: more distant in especially space or time

"They live in the farther house."

adjective: more distant in especially degree

"Farther from the truth."

adverb: to or at a greater distance in time or space (farther' is used more frequently than further' in this physical sense)

"Farther north."

adverb: to or at a greater extent or degree or a more advanced stage (further' is used more often than farther' in this abstract sense)

"The application of the law was extended farther."