As nouns the difference between motility and immotility
is that motility is (uncountable) the state of being motile while immotility is a lack of motility (the inability to move).
motility
English
Noun
(uncountable) The state of being motile
(countable) The degree to which something is motile
immotility
English
Noun
(-)
A lack of motility (the inability to move)
Related terms
*immotile