fit vs fill

fit and fill both are nouns.

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

As verbs, fit and fill are synonyms defined as:

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

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

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

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

fit (noun)	fill (noun)
a sudden flurry of activity (often for no obvious reason)	a quantity sufficient to satisfy
the manner in which something fits	any material that fills a space or container
a sudden uncontrollable attack
a display of bad temper

fit (adjective)	fill (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

fit (verb)	fill (verb)
make correspond or harmonize	become full
make fit	make full, also in a metaphorical sense
insert or adjust several objects or people	plug with a substance
fill, satisfy or meet a want or need or condition or restriction	fill to satisfaction
provide with (something) usually for a specific purpose	eat until one is sated
be the right size or shape; fit correctly or as desired	fill, satisfy or meet a want or need or condition or restriction
conform to some shape or size	assume, as of positions or roles
be compatible, similar or consistent; coincide in their characteristics	appoint someone to (a position or a job)
be agreeable or acceptable to	occupy the whole of