saccade vs motility

saccade and motility both are nouns.

Word	Noun	Adjective	Verb	Adverb
saccade	Yes	No	No	No
motility	Yes	No	No	No

As nouns, motility is a hypernym of saccade; that is, motility is a word with a broader meaning than saccade:

Other hypernyms of saccade include motion, move, movement.

saccade (noun)	motility (noun)
a rapid, jerky movement of the eyes between positions of rest	a change of position that does not entail a change of location
an abrupt spasmodic movement	ability to move spontaneously and independently