encourage vs contribute

encourage and contribute both are verbs.

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

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

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

encourage (verb)	contribute (verb)
spur on	contribute to some cause
inspire with confidence; give hope or courage to	bestow a quality on
contribute to the progress or growth of	provide
	be conducive to