As nouns the difference between directional and directivity
is that directional is something that indicates direction, such as a vehicle's turn signal while directivity is the effect of earthquake motion propagation being greater in the direction of the rupture.
As an adjective directional
is indicating direction.
directional
English
Adjective
(
en adjective)
Indicating direction.
Of or relating to guidance or help.
Noun
(
en noun)
Something that indicates direction, such as a vehicle's turn signal.
Derived terms
* (l)
See also
* (l)
* (l)
* (l)
* (l)
* (l)
directivity
English
Noun
(directivities)
(geology) The effect of earthquake motion propagation being greater in the direction of the rupture