speed vs graduality

speed and graduality both are nouns.

Word	Noun	Adjective	Verb	Adverb
speed	Yes	No	Yes	No
graduality	Yes	No	No	No

As nouns, graduality is a hyponym of speed; that is, graduality is a word with a more specific, narrower meaning than speed:

speed: a rate (usually rapid) at which something happens
graduality: the quality of being gradual or of coming about by gradual stages

Other hyponyms of speed include haste, hastiness, hurriedness, hurry, precipitation, execution speed, gradualness.

speed (noun)	graduality (noun)
changing location rapidly	the quality of being gradual or of coming about by gradual stages
a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
a rate (usually rapid) at which something happens
the ratio of the focal length to the diameter of a (camera) lens system
distance travelled per unit time

speed (verb)	graduality (verb)
move faster
cause to move faster
move very fast
travel at an excessive or illegal velocity
move hurridly