fulfil vs complete

fulfil is not an adjective while complete is an adjective.

Word	Noun	Adjective	Verb	Adverb
fulfil	No	No	Yes	No
complete	No	Yes	Yes	No

As verbs, complete is a hypernym of fulfil; that is, complete is a word with a broader meaning than fulfil:

Other hypernyms of fulfil include finish, effect, effectuate, set up.

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

Other hyponyms of fulfil include get over, run, consummate, consummate, do, perform, discharge, dispatch.

fulfil (adjective)	complete (adjective)
	having every necessary or normal part or component or step
	having come or been brought to a conclusion
	perfect and complete in every respect; having all necessary qualities
	highly skilled
	without qualification; used informally as (often pejorative) intensifiers

fulfil (verb)	complete (verb)
fill, satisfy or meet a want or need or condition or restriction	bring to a whole, with all the necessary parts or elements
put in effect	come or bring to a finish or an end
meet the requirements or expectations of	write all the required information onto a form
	complete a pass
	complete or carry out