ill temper vs fit

ill temper and fit both are nouns.

Word	Noun	Adjective	Verb	Adverb
ill temper	Yes	No	No	No
fit	Yes	Yes	Yes	No

As nouns, fit is a hyponym of ill temper; that is, fit is a word with a more specific, narrower meaning than ill temper:

Other hyponyms of ill temper include irascibility, quick temper, short temper, spleen, conniption, scene, tantrum.

ill temper (noun)	fit (noun)
a persisting angry mood	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

ill temper (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

ill temper (verb)	fit (verb)
	make correspond or harmonize
	make fit
	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