fulfil vs fit

fulfil is not a noun while fit is a noun.

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

As verbs, fulfil and fit are synonyms defined as:

fulfil and fit: fill, satisfy or meet a want or need or condition or restriction

Other synonyms of fulfil include conform to, fill, fulfill, meet, satisfy.

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

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

Other hypernyms of fulfil include conform to, fill, fulfil, fulfill, meet, satisfy.

fulfil (noun)	fit (noun)
	a sudden flurry of activity (often for no obvious reason)
	the manner in which something fits
	a sudden uncontrollable attack
	a display of bad temper

fulfil (adjective)	fit (adjective)
	physically and mentally sound or healthy
	meeting adequate standards for a purpose
	(usually followed by `to' or `for') on the point of or strongly disposed

fulfil (verb)	fit (verb)
fill, satisfy or meet a want or need or condition or restriction	make correspond or harmonize
put in effect	make fit
meet the requirements or expectations of	insert or adjust several objects or people
	fill, satisfy or meet a want or need or condition or restriction
	provide with (something) usually for a specific purpose
	be the right size or shape; fit correctly or as desired
	conform to some shape or size
	be compatible, similar or consistent; coincide in their characteristics
	be agreeable or acceptable to