encourage vs further

encourage is not an adjective while further is an adjective.

Word	Noun	Adjective	Verb	Adverb
encourage	No	No	Yes	No
further	No	Yes	Yes	Yes

As verbs, encourage and further are synonyms defined as:

Other synonyms of encourage include advance, boost, promote.

As verbs, further is a hyponym of encourage; that is, further is a word with a more specific, narrower meaning than encourage:

Other hyponyms of encourage include connive at, wink at, cultivate, foster, spur, help, carry, feed, conduce, contribute, lead.

encourage (adjective)	further (adjective)
	more distant in especially degree

encourage (verb)	further (verb)
spur on	contribute to the progress or growth of
inspire with confidence; give hope or courage to	promote the growth of
contribute to the progress or growth of

encourage (adverb)	further (adverb)
	to or at a greater distance in time or space (`farther' is used more frequently than `further' in this physical sense)
	to or at a greater extent or degree or a more advanced stage (`further' is used more often than `farther' in this abstract sense)
	in addition or furthermore